#include<stdio.h> int main(void) { int i,n; double r,v,h; double cylinder(double r,double h); printf("enter n:"); scanf("%d",&n); for(i=1;i<=n;i++){ printf("Enter r and h: "); scanf("%lf%lf",&r,&h); if((r<=0)||(h<=0)){ printf("输入错误,重新输入"); } else{ v=cylinder(r,h); printf("V=%.3f ",v); } } return 0; } double cylinder(double r,double h) { double result; result=3.1415926*r*r*h; return result; }
#include<stdio.h> int main(void) { int i,n; double s,r; printf("enter n:"); scanf("%d",&n); for(i=1;i<=n;i++){ printf("Enter r:"); scanf("%lf",&r); if(r<=0){ printf("输入错误,重新输入"); return 0; } else if(r<=50){ s=r*0.53; printf("s=%.3f ",s); } else{ s=50*0.53+(r-50)*0.58; printf("s=%.3f ",s); } } return 0; }