tai lieu c ppsx

Trang 1

#include<stdio.h>

#include<conio.h>

#include<math.h>

void main()

{float a,b,c,cv,p,s;

printf("nhap a,b,c");

scanf("%f%f%f",&a,&b,&c);

if ((a+b)>c)//((a+c)>b)//((c+b)>a)

&&(a>0)&&(b>0)&&(c>0))

{ cv=a+b+c;

p=(cv/2);

s=sqrt(p*(p-a)*(p-b)*(p-c));

printf("chuvi=%f, dientich=%f",cv,s);}

else printf("khong tao thanh tam giac");

getch();}

Cau2

#include <stdio.h>

int a,b,ch;

void main()

{printf("nhap a va b");

scanf ("%d%d",&a,&b);

fflush (stdin);

printf("nhappheptinh");scanf("%c",&ch);

switch (ch)

{case'+' :

{printf("%d+%d=%d",a,b,a+b);

break; }

case '-':

{printf("%d-%d=%d",a,b,a-b);

break; }

case'*' :

{printf("%d*%d=%d",a,b,a*b);

break; }

case'/' :

printf("%d/%d=%d",a,b,a/b);} getch();}

cau3

cau 21/* In so nguyen to nho hon n */

void main() {int n, i, j;

printf("\n Nhap gia tri cua N: ");

scanf("%d", &n);

printf ("\nCac so nguyen to nho hon %d la:",n); for (i=2; i<n; i++)

{ for (j=2; j<i; j++)if (i%j == 0) break;

if (j == i) printf("%d ", i); } getch();}

cau22/* Tính can 2 theo nguyên tac Newton */ #include <stdio.h>

#include <conio.h>

#include <math.h>

void main() { double a, e,xn, ketqua;

printf("\nNhap vào so muon tính can bac 2: "); scanf("%lf", &a); tt: printf ("nhap e");

scanf ("%lf",&e); if (e>0.0001) goto tt;

xn = (a+1)/2; do { ketqua = xn; xn = 0.5 * (xn + a/xn);}

while (fabs(xn-ketqua) > e);

printf("\n Ket qua = %5.3lf", xn); printf ("\n"); getch();

cau 23 /*So lon nhat trong 5 so*/

int max(int a,int b) {int m; if (a>b) m=a;

else m=b; return m;}

void main() {int a,b,c,d,e,Max;

printf (" nhap 5 so");

scanf ("%d%d%d%d%d",&a,&b,&c,&d,&e); Max = max(max(max(max(a,b),c),d),e);

printf ("ket qua = %d\n",Max);

getch();}

cau 24 /*Toi gian phan so bang ham*/

Trang 2

void main()

{

int t,n,sn;

printf ("nhap thang va nam"); scanf("%d

%d",&t,&n);

switch(t)

{case 4: case 6: case 9: case 11: { sn=30; break;}

case 1: case 3: case 5:case 7: case 8: case 10: case

12:

{sn=31; break ;}

case 2: { if (n%4==0) sn=28; else sn=29;}

}printf (" thang %d cua nam %d co %d

ngay",t,n,sn); getch();}

Cau 4

void main()

{int n,a,b,c;

printf("nhap n");scanf("%d",&n);

a=n%10;b=(n/10)%10;

c=(n/100)%10;

if((a+b+c)/3==0)

printf("%d chia het cho 3",n);

else printf("%d khog chia het cho 3",n);

getch();}

cau 5

float

dkc,dkm,n,tong,tv,tv1,tv2,tv3,tv4,t1,t2,t3,t4,tdm;

void main()

{ clrscr();

printf(" nhap dien ke cu ");

scanf("%f",&dkc);

printf("\n nhap chi so dien ke moi:");

scanf("%f",&dkm);

n=dkm-dkc;

if (n<=50) tdm=n*450; else tdm=50*450;

if ((n>50)&&(n<=100) )

{tv1=(n-50)*700; t1=50*450+tv1;}

else if((n>100)&&(n<=150))

{tv2=(n-100)*1200; t2=50*450+50*700+tv2;}

else if ((n>150)&&(n<=250)) {tv3=(n-150)*2000;

# include <math.h>

/*Ham tinh USCLN*/

int USCLN (int n, int m) { while (n != 0 && m != 0)

if (n>m) n =n- m; else

m =m- n; if (n == 0) return m;

else return n; } int main() { int ts,ms; printf ("nhap tu so ");

scanf ("%d",&ts);

printf ("nhap mau so");

scanf ("%d",&ms);

if (USCLN (ts,ms)>1) printf ("phan so chua toi gian!");

if (USCLN (ts,ms)==1) printf ("phan so da toi gian!");

getch(); } cau 25 /*Kiem tra so có chia het cho 3 khong_ dung ham*/

/*Hàm tinh tong cua so n*/

int tong(int so) { int k, t=0; while (so) {k=so%10; t=t+k; so=so/10;} return t;}

/*Chuong trình chinh*/

void main() { int n,t; do {printf ("nhap 1 so nguyen duong bat ky: ");

scanf ("%d",&n);} while (n<0);

t= tong (n); if ((t%3)==0) printf ("%d chia h?t cho 3",n); else printf("%d Khong chia het cho 3",n);

getch();}

cau 26 #include<stdio.h>

int ham_mu(int x,int n) {int i,mu=1;

for (i=0;i<=n;i++) {if(i==0) mu=1;

else mu=mu*x;} return(mu); } int main() { tt: int n,s,i,x;

do{printf("nhap so mu n=");

scanf("%d",&n);

printf("nhap gia tri x=");

Trang 3

t3=50*450+50*700+50*1200+tv3;}

else if(n>250) {tv4=(n-250)*3000;

t4=50*450+50*700+50*1200+100*2000+tv4;}

tv=t1+t2+t3+t4+tdm;

tong =tv+tdm+1000;

printf ("\n so tien phai tra trong dinh muc la

%.2f",tdm);

printf(" \n so tien phai tra vuot dinh muc la

%.2f",tv);

printf(" \n tong so tien phai tra la %.2f",tong );

getch() ; }

Cau6

int m,h,s,a;

void main ()

{printf("nhap gio: phut: giay ");

scanf ("%d%d%d",&h,&m,&s);

printf("nhap so giay cong them ");

scanf ("%d",&a); {s=s+a;

m=m+s/60; h=h+m/60;s=s%60;m=m%60;

printf("gio moila%d:%d:%d",h,m,s);}

getch(); }

cau7

int sn,t,n;

void main()

{clrscr();

printf("nhap ngay, thang, nam:" );

scanf("%d%d%d",&sn,&t,&n);

switch (t)

{case 4:case 6:case 9:case 11:

{if (sn<=30) printf(" hop le"); else

printf("khong hop le ,thang %d cua nam %d chi

co 30 ngay",t,n);

break; }

case 2: {if (sn%4==0) if(sn<=29) printf("hop le");

else

co 29 ngay",t,n);

else if (sn<=28) printf("hop le"); else

co 28 ngay",t,n);break; }

scanf("%d",&x);}

while(x<0||n<0); s=0;

for(i=0;i<=n;i++) s=s+ham_mu(-1,i)*ham_mu(x,i);

printf("tong la=%d",s);

printf("ban co muon tiep tuc khong C/K?"); int k=getch();

if(k=='c'||k=='C')goto tt; }

Cau27

int ham_mu(int x,int n) {int i,mu=1; for (i=0;i<=n;i++) {if (i==0) mu=1;

else mu=mu*x; } return(mu);}

int giai_thua(int n) {int i,gt=1;for (i=0;i<=n;i++) {if(i==0) gt=1; else gt=gt*i;} return (gt);} int main() {tt: int n,i,x;

do { printf("nhap so mu n=") scanf("%d",&n);

printf("nhap gia tri x=");

scanf("%d",&x); } while(x<0||n<0);

float s=0; for(i=0;i<=n;i++) s=s+ham_mu(x,i)/giai_thua(i);

printf("tong la=%f",s);

printf("ban co muon tiep tuc khong C/K?"); getch();}

cau 28 #include <conio.h>

void main() {int a[50],i, n, j,dem=0, tam;

printf("\nnhap n : ");

scanf("%d", &n);

for (i=0; i<n; i++) {printf("a[%d]: ",i);

scanf("%d", &a[i]);}

for (i=0; i<n-1; i++) for (j=i+1; j<n; j++)

if (a[j] < a[i]) {tam = a[i]; a[i] = a[j];

a[j] = tam;}

Trang 4

case 1:case 3: case 5:case 7:case 8: case 10: case 12:

{if (sn<=31) printf(" hop le"); else

printf(" khong hop le ,thang %d cua nam %d chi

co 31 ngay",t,n); } } getch(); }

void main()

{ char kt;

printf (" nhap ky tu can kiem tra");

scanf ("%c",&kt);

if (kt>='A'&&kt<='Z')

printf ("Chu Hoa");else

if (kt>='a'&&kt<='z')

printf ("Chu Thuong");

else if (kt>='0'&& kt<='9')

printf ("So");else

printf ("Khac"); getch(); }

Cau 9 #include <stdio.h>

int main()

{ char kt;

printf ("\nnhap vao ky tu ");

scanf ("%c",&kt); printf ("\n");

if (kt>='0'&&kt<='9')

printf (" gia tri trong he DEC = %c",kt);

if (kt== 'A') printf ("A(HEX)=10(DEC)");

if (kt== 'B') printf ("B(HEX)=11(DEC) ");

if (kt== 'C') printf (" C(HEX)=12(DEC) ");

if (kt== 'D') printf (" D(HEX)=13(DEC) ");

if (kt== 'E') printf (" E(HEX)=14(DEC) ");

if (kt== 'F') printf (" F(HEX)=15(DEC) ");

if (kt<'0'|| kt>'9'&&kt<'A'||kt>'F')

printf (" khong co kys tu nay trong he HEX ");

getch(); }

cau 10

void main()

for (i=0; i<n; i++) printf ("%d ",a[i]);

getch();}

cau 29

void main() {int a[50], i,k,n,j,tam;

printf("\nnhap n : ");

scanf("%d", &n);

scanf("%d", &a[i]);}

if (a[j] < a[i]) {tam = a[i]; a[i] = a[j];

a[j] = tam; } for(i=0;i<n-1;i++) for(j=i+1;j<n;j++) if(a[i]==a[j]) {for(k=j+1;k<n;k++)

a[k-1]=a[k];n ;j ;}

for(i=0;i<n;i++) printf("%5d ",a[i]); getch();}

cau 30

void main() {int a[50], i,s, n, j,dem=0, tam; printf("\n nhap so phan tu n:"); scanf("%d", &n);

scanf("%d", &a[i]); } for (i=0; i<n-1; i++) for (j=i+1; j<n; j++)

if (a[j] < a[i]) {tam = a[i];a[i] = a[j];

a[j] = tam;}

printf ("s? l?n nh?t là %d",a[n-1]); printf ("s? nh? nh?t là %d ",a[0]); s=0; for (i=0;i<n;i++) s=s+a[i]; printf ("tong cac phan tu=%d ",s); getch();}

Trang 5

{ int n,i,k;

printf ("Nhap so n");

scanf ("%d",&n);

printf (" cac so chinh phuong tu 1 den %d la",n);

for (i=2;i<=(n/2);i++)

{k=i*i; if (k<=n) printf ("%d ",k);}

getch(); }

Cau 11

void main()

{ int d,m,y,day,month,year;

printf (" nhap ngay - thang - nam ");

scanf ("%d%d%d",&d,&m,&y);

month=m; year=y;

{ if (m==1||m==3||m==5||m==7||m==8||m==10)

{ if (d<31)day=d+1; if (d==31)

{ day=1; month=m+1; year=y; }}

if (m==4||m==6||m==9||m==11)

{ if (d<30)day=d+1; if (d==30)

{day=1; month = m+1; year=y; } }if (m==12)

{ if (d<31)day=d+1; if (d==31)

{ day=1; month=1; year=y+1;} } if (m==2)

{ if (y%4==0 && y%100 != 0||y%400 ==0 )

{ if (d<29) day=d+1; if (d==29)

{day=1; month=3; year=y; } }

Else { if (d<28)day=d+1; if (d==28)

{day=1; month=3; year=y; }}}}

printf ("ngay mai la ngay %d thang %d nam %d

",day,month,year);

getch(); }

cau 12

/*t?ng S1 S2 S3*/

#include<stdio.h

void main()

{int s1=0,s4=0,s5=0,n,i,s3=0,m=0;

float s2=0,k=0,tu,mau;

printf ("nhap n");

scanf ("%d",&n);

for (i=1;i<=n;i++)

{s1=s1+i;

cau 31

void main() {int n,j,i,tam,x,a[10]; tt:

printf ("nhap n= ");

scanf ("%d",&n);

for (i=0;i<n;i++) {printf ("a[%d]=",i);

scanf ("%d",&a[i]);

for (j=1;j<=i;j++) if (a[j-1]>a[i]) {printf ("nhap lai \n"); goto tt;} } for (i=0;i<n;i++) printf ("%d ",a[i]);

printf ("\n nhap so can chon ");

scanf("%d",&a[n]); n++;

for (i=0; i<n; i++) for (j=i+1; j<n; j++) if (a[j] < a[i]) {tam = a[i]; a[i] = a[j]; a[j] = tam; } for (i=0;i<n;i++)

printf ("%d ",a[i]); getch();}

cau 32

#include<conio.h> #include<stdio.h>

void Nhap(int a[50][50],int M,int N) {int i,j;for(i=0;i<M;i++) for(j=0; j<N; j++) {printf("nhap phan tu [%d][%d]",i,j);

scanf("%d",&a[i][j]);}

}void Xuat(int a[50][50], int M, int N) {int i,j; for(i=0;i<M;i++) {for(j=0; j< N; j++) printf("%d ",a[i][j]);

printf("\n");} }void main() { int a[50][50],m,n,x,i,j,dem=0;

printf ("nhap vao so dong x so cot");

scanf ("%d%d",&m,&n);

printf (" Nhap Ma tran A \n");Nhap(a,m,n);

printf ("Ma tr?n A\n"); Xuat (a,m,n);

printf ("nhap vao so can so sanh!\n");

scanf("%d",&x); for (i=0;i<=m-1;i++) for (j=0;j<=n-1;j++) if (a[i][j]==x) {dem=dem+1; printf ("a{%d][%d]=%d \n",i,j,a[i][j]);} if (dem==0) printf (" khong co phan tu %d trong mong",x); else printf ("co %d phan tu %d trong mong

\n",dem,x);

getch();}

Trang 6

tu=i; mau=i+1;

s2=s2+ tu/mau;

if (i%2 ==0) s5=s5+i;

else s4=s4+i;

s3=s5-s4; }

printf ("s1= %d \ns2=%f \ns3=%d \n",s1,s2,s3);

getch();}

void main()

{ int a[50],n,i,vt,max,j;

printf("nhap so phan tu n ");

scanf("%d",&n);

printf ("nhap cac phan tu n :\n ");

for(i=0;i<n;i++)

{ printf("a[%d]=",i);

scanf("%d",&a[i]);}

max=a[0]; j=0; for(i=0;i<n;i++)

if(a[i]>max)

{ max=a[i]; j=i;}

printf("phan tu lon nhat la %d o vi tri so

%d\n",max,j+1);

getch(); }

cau 14

void main()

{ int i,dem=0,n;

printf ("Nhap n");

scanf("%d",&n);

for(i=n; i!=0; i=i/10)

dem++;

printf("%d la so cac chu so co trong so %d",

dem,n);

getch();}

Cau 15

/*Tim k sao cho 2^k>n_n nhap vào tu bàn phim */

void main()

cau33

void main() {int a[50],i,j,chan,le,n,dem1,dem2;

printf("nhap n");scanf("%d",&n) ; printf("nhap gia tri cua phan tu");

for (i=0;i<n;i++) {printf("a[%d]=",i); scanf("%d",&a[i]);}

dem1=0 ; for (i=0;i<n;i++)

if (a[i]%2==0) {printf("\n %d so chan ",a[i]);

dem1++; } printf("\n co %d so chan ",dem1);

dem2=0; for (i=0;i<n;i++)

if (a[i]%2!=0) {printf("\n %d so le ",a[i]);

dem2++;}

printf("\nco %d so le ",dem2);

getch();}

cau34

void main() {int a[50],i,n,j,dem=0,tam;

printf("\n nhap n : ");

scanf("%d", &n);

scanf("%d", &a[i]);}

printf ("ca phan tu khi dao ");

for (i=n-1;i>=0;i ) printf (" %d ",a[i]);

getch();}

cau 35 #include<conio.h>

void Nhap(int a[50][50],int M,int N) {int i,j;for(i=0;i<M;i++)for(j=0; j<N; j++) {printf("nhap phan tu [%d][%d]",i,j);

scanf("%d",&a[i][j]);}

}void Xuat(int a[50][50], int M, int N) {int i,j;for(i=0;i<M;i++) {for(j=0; j< N; j++) printf("%d ",a[i][j]);printf("\n"); } }void Cong(int a[50][50],int b[50][50],int M,int N,int c[50]

Trang 7

{ int s=1,k=0,n;

scanf ("%d",&n);

do

{ s=s*2; k++; }

while (s<n);

printf ("voi k=%d thi 2^k> %d",k,n);

getch(); }

cau 16 /*dao nguoc 1 so nguyen */

void main()

{int a,n;

printf ("nhap n= ");

scanf("%d",&n);

printf ("so dao nguoc cua %d la",n);

for(int i=n; i!=0; i/=10)

{ a=i%10; printf ("%d",a);}

getch(); }

cau17/*trung binh day so thuc*/

void main()

{float a[10],s=0,tb ,n;

int i; for(i=1;i<10;i++)

{printf (" Phan tu thuc %d = ",i);

scanf ("%f",&a[i]);

s=s+a[i]; if (a[i]==-1)

goto tt; if (a[i]<0)

{printf (" %f Khong phai so thuc duong!",a[i]);

goto end; } } tt:

tb=(s+1) / (i-1);

printf ("trung binh = %10.3f",tb) ;

end: ; getch(); }

cau 18/* DIV */

int a,b, c,d;

void main()

{printf("nhap 2 so nguyen ava b");

scanf ("%d%d",&a,&b);

d=1; if (a>=b)

[50]) {int i,j;for(i=0;i<M;i++) for(j=0; j<N; j++) c[i][j]=a[i][j]+b[i][j];}void main()

{int a[50][50],b[50][50],c[50][50],m,n;

printf ("Nhap vao so dongxso cot");

scanf ("%d%d",&m,&n);

printf ("Nh?p Ma tran A ");Nhap(a,m,n); printf ("Nh?p Ma tran B ");Nhap (b,m,n); printf ("Ma tran A =\n"); Xuat (a,m,n); printf (" Ma tran B =\n"); Xuat (b,m,n); Cong (a,b,m,n,c); printf ("Ma tran tong=\n"); Xuat (c,m,n);getch(); }

Cau36

void main() {int a[50],i,n,dem=0,x;do {printf (" nhap so phan tu ");

scanf ("%d",&n);} while (n<0);

for (i=0;i<n;i++) {printf ("a[%d]= ",i);

scanf ("%d",&a[i]);}

printf (" nhap so can so sanh ");

scanf ("%d",&x);

for (i=0;i<n;i++) if (a[i]==x) {dem++;

printf ("a{%d}= \n",i,a[i]);}

printf ("co %d phan tu bang %d ",dem,x); getch();}

cau 37

void main() {int a[50],i,j,n,dem,min;

printf("\n nhap n: ");

scanf("%d", &n);

scanf("%d", &a[i]);}

min=a[0]; for (i=0;i<n;i++ )

if (min > a[i]) min = a[i];

printf ("phan tu nho nhat la= %d",min); for (j=0;j<a[i]-1;j++)

Trang 8

{c=a-b;

while (c>=b)

{d++;c=c-b;} }

if (b>a)

{c=b-a; while (c>=a)

{d++;c=c-a;}}

printf("%d/%d=%d",a,b,d),

getch(); }

cau 19

float t,n,s;

void main()

{printf ("\n nhap s=");

scanf ("%f",&s);

n=1;t=0; while (t<=s)

{t=t+1; n++; }

printf("ta duoc n=%d",n);

getch();}

cau 20 #include <stdio.h>

int USCLN (int n, int m)

{ while (n != 0 && m) if (n>m) n =n- m;

else m =m- n; if (n == 0)

return m; else return n;}

int BSCNN (int n, int m)

{return n * m / USCLN(n, m);}

void main()

{int n, m;

printf("\nNhap vào 2 so nguyen duong : ");

scanf("%d%d", &n, &m);

printf("\nUSCLN cua %d va %d = %d", n, m,

USCLN(n,m));

printf("\nBSCNN cua %d va %d = %d", n, m,

BSCNN(n,m));

getch();}

if( a[i]==min) dem++;

printf (" co %3d phan to nho nhat",a[i]); getch();}

cau38

void main() {int a[50], x,dem=0,n,i;

scanf ("%d",&n);

for (i=0;i<n;i++) {printf(" a[%d]= ",i);

scanf ("%d",&a[i]);

}printf (" X= ");

scanf ("%d",&x);

for (i=1;i<n;i++) {if ((a[i]% x) == 0) {dem=dem+1;

printf ("a[%d]= %d ",i,a[i]);}}

printf ("co %d pt chia het cho %d",dem,x); getch();}

cau39 #include <stdio.h>

void main() {int a[80],i, n, j,dem=0, tam;

float tb,max,min;

printf("\nnhap n: ");

scanf("%d", &n);

scanf("%d", &a[i]);}

if (a[j] < a[i]) {tam = a[i];a[i] = a[j];

a[j] = tam;}

max=a[0];min=a[n-1];

tb=(max+min)/2;

printf (" %5f ",tb);

getch();}

cau40

void main()

Trang 9

{int a[50],s=0,n,i,h,k;do

{printf ("nhap n:");

scanf ("%d",&n);} while (n<2); for (i=0;i<n;i++)

{printf(" a[%d]= ",i);

scanf ("%d",&a[i]);}tt:

{printf ("nhap h,k");

scanf("%d%d",&h,&k);}

if (k>h || h>n || k<0)

goto tt; for (i=k;i<=h;i++)

{s=s+a[i];

printf ("a[%d]=%d ",i,a[i]);} printf (" tong = %d ",s);getch();}

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