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CÈëÃÅÎÊÌâ - C/C++ / CÓïÑÔ

#include <stdio.h>

void main(){
double h;
double r;
printf("Plese input h:\n");
scanf("%f", &h);
printf("\nPlese input r:\n");
scanf("%f", &r);
double m;
m = 2 * 3.14 * r * h;
printf("\nmain ji shi:\t%f", m);

}

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