小宝的第四章
#include<stdio.h> int main(void) { int child,men,women; for(men=0;men<=15;men++) for(women=0;women<=22;women++){ child=45-women-men; if(men*3+women*2+child*0.5==45) printf("men=%d,women=%d,child=%d\n",men,women,child); } return 0; }
#include<stdio.h> int main(void) { int child,men,women; for(men=0;men<=45;men++) for(women=0;women<=45;women++) for(child=0;child<=45;child++) if(men+women+child==45&&men*3+women*2+child*0.5==45) printf("men=%d,women=%d,child=%d\n",men,women,child); return 0; }
#include<stdio.h> int main(void) { int i,x1,x2,x; x1=1; x2=1; printf("%6d%6d",x1,x2); for(i=1;i<=8;i++){ x=x1+x2; printf("%6d",x); x1=x2; x2=x; } printf("\n"); return 0; }
#include<stdio.h> #include<math.h> int main(void) { int count,i,m,n; count=0; for(m=2;m<=100;m++){ n=sqrt(m); for(i=2;i<=n;i++) if(m%i==0) break; if(i>n){ printf("%6d",m); count++; if(count%10==0) printf("\n"); } } printf("\n"); return 0; }
#include<stdio.h> int main(void) { int x; printf("Enter x:"); scanf("%d",&x); while(x!=0){ printf("%d",x%10); x=x/10; } return 0; }
#include<stdio.h> int main(void) { int i,mark,max,n; printf("Enter marks:"); scanf("%d",&mark); max=mark; while(mark>=0){ if(max<mark) max=mark; scanf("%d",&mark); }; printf("Max=%d\n",max); return 0; }
#include<stdio.h> int main(void) { int i,mark,max,n; printf("Enter n:"); scanf("%d",&n); printf("Enter %d marks:",n); scanf("%d",&mark); max=mark; for(i=1;i<n;i++){ scanf("%d",&mark); if(max<mark) max=mark; } printf("Max=%d\n",max); return 0; }
#include<stdio.h> int main(void) { int i,j; double item,sum; sum=0; for(i=1;i<=100;i++){ item=1; for(j=1;j<=i;j++) item=item*j; sum=sum+item; } printf("1!+2!+...+100!=%e\n",sum); return 0; }
#include<stdio.h> double fact(int n); int main(void) { int i; double sum; sum=0; for(i=1;i<=100;i++) sum=sum+fact(i); printf("1!+2!+...+100!=%e\n",sum); return 0; } double fact(int n) { int i; double result; result=1; for(i=1;i<=n;i++) result=result*i; return result; }
#include<stdio.h> int main(void) { int mynumber=38; int count=0,yournumber; for(count=1;count<=5;count++) { printf("Input yournumber:"); scanf("%d",&yournumber); if(yournumber==mynumber){ printf("Ok!you are right!\n"); break; } else if(yournumber>mynumber) printf("Sorry! your number is bigger than my number!\n"); else printf("Sorry! your number is smaller than my number!\n"); } printf("Game is over!"); return 0; }
#include<stdio.h> int main(void) { int i,m; printf("Enter a number:"); scanf("%d",&m); for(i=2;i<=m/2;i++) if(m%i==0) break; if(i>m/2&&m!=1) printf("%d is a prime number!\n",m); else printf("No!\n"); return 0; }
#include<stdio.h> int main(void) { int count,number; count=0; printf("Enter anumber:"); scanf("%d",&number); if(number<0)number=-number; do{ number=number/10; count++; }while(number!=0); printf("It contains%d digits.\n",count); return 0; }
#include<stdio.h> int main(void) { int count,num; double grade,total; num=0; total=0; count=0; printf("Enter grades:"); scanf("%lf",&grade); while(grade>=0){ total=total+grade; num++; if(grade<60) count++; scanf("%lf",&grade); } if(num!=0){ printf("Grade average is %.2f\n",total/num); printf("Number of failures is %d\n",count); } else printf("Grade average is 0\n"); return 0; }
#include<stdio.h> #include<math.h> int main(void) { int denominator,flag; double item,pi; flag=1; denominator=1; item=1.0; pi=0; while(fabs(item)>=0.0001){ item=flag*1.0/denominator; pi=pi+item; flag=-flag; denominator=denominator+2; } pi=pi*4; printf("pi=%.4f\n",pi); return 0; }