[c语言] 调用函数实现求两个数中的最大值

#include<stdio.h>
int max(int x, int y)
{
  int max = 0;
  if (x < y)
  {
    max = y;
  }
  else
  {
    max = x;
  }
  return max;
}
int main()
{
  int a, b, c;
  int max(int x, int y);
  printf("请输入两个整数\n");
  scanf("%d %d", &a, &b);
  c=max(a, b);
  printf("max=%d", c);
  system("pause");
  return 0;
}