麻烦大神编写个程序 谢谢了!!!
#include <stdio.h>
unsigned long func(unsigned long a,unsigned long b)
{
unsigned long sum;
for(sum=0;a<=b;++a)
sum+=a;
return sum;
}
int main()
printf("%lu\n",func(1,50));
printf("%lu\n",func(50,100));
return 0;