#include <stdafx.h>
int zhouchang(int a,int b,int c)
{
 if ((a + b )<= c || (a + c )<= b || (b + c )<= a)
 {
  printf("不能构成三角形");
  return 0;
 }
 else
 {
  int sum = a + b + c;
 }
}
int main()
{
 int a, b, c;
 a = 3;
 b = 4;
 c = 5;
 printf("三角形周长为%d", zhouchang(a,b,c));
}
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