#include
#include
#define PI 3.14 int main() {int r=0; float c=0,s=0; scanf(“%d”,&r); c=2PIr; s=PIrr; Printf (” c = % 6.2 f, s = % 6.2 f \ n “, c, s); } I am a beginner, this program compiled into an EXE file to save the point open run, input a value and then enter on the screen disappeared, I hope you give advice.