c语言有一个错误

Question

这条c语句有一个错误，总是找不到，麻烦帮我找下。 以下是代码：

#include <stdio.h>
int main (void)
{
long sum=0L;
int count=0;

printf("\nEnter the number of integers you want to sum:");
scanf("%d",&count);

for(int i=1; i <= count;i++)
sum +=i;
printf("\nTotal of the first %d number is %Ld\n",count,sum);
return 0;
}

Answer 1

你好！

    

Answer 2

#include <stdio.h>
int main (void)
{
long sum=0;
int count,i;

printf("\nEnter the number of integers you want to sum:");
scanf("%d",&count);

for( i=1;i<count||i==count;i++)
/* [Error] 'for' loop initial declarations are only allowed in C99 mode 我估计意思是在for（）中定义变量，只能在C99标准里*/
sum +=i;
printf("\nTotal of the first %d number is %Ld\n",count,sum);
return 0;
}本回答被提问者和网友采纳

Answer 3

#include <stdio.h>
int main ()//无需void
{
long int sum=0;//这才是长整形变量
int count;//无需赋值，但不为错，会被掩盖

printf("\nEnter the number of integers you want to sum:");
scanf("%d",&count);

for(int i=1; i <= count;i++)
sum+=i;
printf("\nTotal of the first %d number is %ld\n",count,sum);
return 0;
}