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can u pls point out the wrong .here is my source code,I dont know why it is wrong,help me please

#include<stdio.h>
#include<math.h>
void main()
{
int n,touches_circle,k;
long a=0,b=0;
double radius,temp;
while(scanf("%d",&n)==1)
{
touches_circle = 8*n-4;
if(touches_circle<0)touches_circle=0 ...