#include<stdio.h> #include<math.h> int main(void) { double S,R,i; printf("Enter R:"); scanf("%Lf",&R); i=pow(R,2); if(R<=0){ printf("Erro!"); } else{ S=3.1415926*i; printf("S=%.2f ",S); } return 0; }
#include<stdio.h> int main(void) { int H,n,i; double R,V; printf("Enter n:"); scanf("%d",&n); printf("Enter R:"); scanf("%Lf",&R); printf("Enter H:"); scanf("%d",&H); V=3.1415926*R*R*H; if(R<=0||H<=0){ printf("Erro!"); } else for(i=1;i<=n;i++) V=V*i; printf("V=%.2f",V); return 0; }