#include <stdio.h>
int main(void)
{
long sum=0L;
int count =0;
int i,j;这个地方必须把它全局声明。这样才不会出现一个叫做 :只允许在 C99 模式下使用‘for’循环初始化声明 的错误。
printf("\nEnter the number of integers you wnat to sum:");
scanf("%d",&count);
for(i=1;i<=count;i++)
{
sum=0L;
for (j=1;j<=i;j++)
sum+=j;
printf("\n%d\t%ld",i,sum);
}
system("pause");
return 0;
}
#include <stdio.h>
int main(void)
{
long sum=0L;
int count =0;
int i,j=1;
printf("\nEnter the number of integers you wnat to sum:");
scanf("%d",&count);
for (i=1;i<=count;i++)
{
sum=1L;
printf("\n1");
while (j<i)
{
sum+=++j;
printf("+%d",j);
}
printf("=%ld\n",sum);
}
system("pause");
return 0;
}