6945375666ThuongPV's blog

By 6945375666ThuongPV, history, 4 years ago, In English

include<stdio.h>

int main() { int n,i,k=1; do{ scanf("%d",&n);}while(n>=8||n<=0); for(i=1;i<=n;++i){ k*=i; } printf("%d",k) ; return 0; }

include<stdio.h>

int main() { int n,i,k=0; scanf("%d",&n); for(i=1;i<=n;++i){ if(n%i==0) ++k; } if(k==2){ printf("La so nguyen to") ; } else{ printf("Khong phai so nguyen to"); } return 0; }

include<stdio.h>

int main() { int n; do{ scanf("%d",&n);} while(n>=1000||n<=0); printf("%d",n/100+(n%100)/10+n%10); return 0; }

include<stdio.h>

int main() { int i,n1,n2; do{ scanf("%d%d",&n1,&n2);} while(n1<=0||n2<=0); for(i=n1;i>0;i--){ if(n1%i==0&&n2%i==0){ printf("%d\n",i);break; }; } for(i=n1;;i++){ if(i%n1==0&&i%n2==0){ printf("%d",i);break; }; } return 0; }

include<stdio.h>

include<math.h>

int main() { float a,b,c; scanf("%f%f%f",&a,&b,&c); if(a==0){ if(b==0){ if(c==0){ printf("Phuong trinh vo so nghiem"); }else{printf("Phuong trinh vo nghiem"); }; }else{ printf("%f",-c/b); }; }else{if(b*b-4*a*c>=0){ printf("%f\n%f",(-b+sqrt(b*b-4*a*c))/(2*a),(-b-sqrt(b*b-4*a*c))/(2*a)); }else{ printf("%f+%fi",-b/(2*a),sqrt(4*a*c-b*b)/(2*a)); printf("\n%f-%fi",-b/(2*a),sqrt(4*a*c-b*b)/(2*a)); } }; return 0; }

include<stdio.h>

include<math.h>

int main() { int n; float x,k=0,m=0,p=1.0,j=1.0,i; do{ scanf("%d%f",&n,&x); }while(n<=0); for(i=0.0;i<=n;++i){ k=k+pow(x,i); m=m+pow(-1,i)*pow(x,i); if(i==0) continue; p=p+pow(x,i)/(j*=i); } printf("%f\n%f\n%f",k,m,p); return 0; }