C编程输入输出问题！

Question

为什么我运行这个程序，再输入数据回车后程序没有输出就结束了？😕😿我刚学 C，好迷茫😭

int main(){
int x_a,x_b,x_c;
int y_a,y_b,y_c;
int n;

scanf("%d %d %d %d %d %d",&x_a,&y_a,&x_b,&y_b,&x_c,&y_c);

int m1,m2,m3,n1,n2,n3;
  m1 = abs((x_b - x_a)) + abs((y_b - y_a));
  m2 = abs(x_b - x_c) + abs(y_b - y_c);
  m3 = abs(x_c - x_a) + abs(y_c - y_a);
  n1 = abs(x_b - x_a);
  n2 = abs(x_b - x_c);
  n3 = abs(x_c - x_a);
  printf("%d",m1);

return 0;

}

```

Answer 1

abs函数用法不对，最好别到括号里进行运算