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Ngày upload: 17.12.2020 13:22:44
Mới tải về: 23.10.2022 18:05:02
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41 #include <stdio.h> #include <conio.h> main() {int n,i,s=1; do {printf("Nhap so nguyen (0<=n<8) : n="); scanf("%d",&n);} while(n<0||n>=8); for (i=0;i<n;i++) s=s*(i+1); printf("\n Ta co %d! = %d .",n,s); getch(); } 42 #include <stdio.h> #include <conio.h> #include <math.h> main() {int n,i,kt=0; printf("Nhap so nguyen n="); scanf("%d",&n); if(n<=1) printf("\n %d khong phai so nguyen to.",n); else { for(i=2;i<=sqrt(n);i++) if(n%i==0) {kt++; break;} if(kt==0) printf("\n %d la so nguyen to.",n); else printf("\n %d khong phai so nguyen to.",n); } getch(); } 43 #include <stdio.h> #include <conio.h> int main(){ int n,T; do {printf("Nhap vao so nguyen duong n<1000:"); scanf("%d",&n);} while(n<=0||n>=1000); T=n-n/10*10+n/10-n/100*10+n/100; printf("\n Tong cac chu so cua %d la T=%d.",n,T); getch(); } 44 #include <stdio.h> #include <conio.h> main() {int a1,b1,a,b,UCLN,BCNN; do {printf("Nhap vao 2 so nguyen duong:"); printf("\n a=");scanf("%d",&a); printf("\n b=");scanf("%d",&b);} while(a<=0||b<=0); a1=a;b1=b; while (a!=b) {if (a>b) a=a-b; else b=b-a;} printf("\n %d la UCLN(%d;%d).",a,a1,b1); printf("\n %d la BCNN(%d;%d).",a1*b1/a,a1,b1); getch(); } 45 #include <stdio.h> #include <conio.h> #include <math.h> main() {float a,b,c,delta; printf("Nhap vao 3 so thuc:"); printf("\n a=");scanf("%f",&a); printf("\n b=");scanf("%f",&b); printf("\n c=");scanf("%f",&c); if(a<0) {a=-a;b=-b;c=-c;} if(a==0) {if(b==0&&c==0) printf("\n Pt vo so nghiem."); if(b==0&&c!=0) printf("\n Pt vo nghiem."); if(b!=0) printf("\n Pt co nghiem x=%f .",-c/b);} else {delta=b*b-4*a*c; if(delta==0) printf("\n Pt co nghiem kep x=%f .",-b/2/a); if(delta>0) printf("\n Pt co 2 nghiem thuc phan biet: \n x1=%f \n x2=%f .",(-b+sqrt(delta))/2/a,(-b-sqrt(delta))/2/a); if(delta<0) printf("\n Pt co 2 nghiem phuc: \n x1=%f+%fi \n x2=%f-%fi .",-b/2/a,sqrt(-delta)/2/a,-b/2/a,sqrt(-delta)/2/a);} getch(); } 46 #include <stdio.h> #include <conio.h> #include <math.h> main() {int i,n,t; float x,S1,S2,S3; do {printf("Nhap vao so nguyen duong n="); scanf("%d",&n);} while(n<=0); printf("\n Nhap so thuc x="); scanf("%f",&x); S1=1; for(i=1;i<n+1;i++) S1=S1+pow(x,i); printf("\n S1=%f",S1); S2=1; for(i=1;i<n+1;i++)S2=S2+pow(-x,i); printf("\n S2=%f",S2); S3=1;t=1; for(i=1;i<n+1;i++) {t=t*i;S3=S3+pow(x,i)/t;} printf("\n S3=%f",S3); getch(); }