詭異的題目不要理這篇

#include
#include
int main(){
double num;
int i;
int array[2];
int sum;
FILE *fp1;
char buff[50];
fp1=fopen("tm.txt","r");
while(!feof(fp1)){
fscanf(fp1,"%s\n",buff);
num=atof(buff);
for(i=1;i<=2;i++){

scanf("%d\n",array[i]);

}
printf("%d",sum);
}
system("pause");
}
int sum(int array[1],int array[2])
{
int p;
p= array[1]!/(array[1]-array[2])! ;
return p;
}