Submission #4652950

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Source Code Expand

#include <stdio.h>
int abs(int x);

int main(){
  int a,b,c,d,e,f;
  double area;
  scanf("%d%d%d%d%d%d",a,b,c,d,e,f);
  c-=a;
  d-=b;
  e-=a;
  f-=b;
  area=abs(c*f-e*d)/2.0;
  printf("%f\n",area);
  return 0;
}

int abs(int x){
  if (x<0) x=-x;
  return x;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:7:9: warning: format ‘%d’ expects argument of type ‘int *’, but argument 2 has type ‘int’ [-Wformat=]
   scanf("%d%d%d%d%d%d",a,b,c,d,e,f);
         ^
./Main.c:7:9: warning: format ‘%d’ expects argument of type ‘int *’, but argument 3 has type ‘int’ [-Wformat=]
./Main.c:7:9: warning: format ‘%d’ expects argument of type ‘int *’, but argument 4 has type ‘int’ [-Wformat=]
./Main.c:7:9: warning: format ‘%d’ expects argument of type ‘int *’, but argument 5 has type ‘int’ [-Wformat=]
./Main.c:7:9: warning: format ‘%d’ expects argument of type ‘int *’, but argument 6 has type ‘int’ [-Wformat=]
./Main.c:7:9: warning: format ‘%d’ expects argument of type ‘int *’, but argument 7 has type ‘int’ [-Wformat=]
./Main.c:7:3: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d%d%d%d",a,b,c,d,e,f);
   ^

Judge Result