递归累加

发表于2020年2月5日由daizao 
vim test.c
#include<stdio.h>

long sum(int n)
{
        if(1==n)
        {
                return 1;
        }
        else
        {
                return n+sum(n-1);
        }
}



int main(void)
{
        int n=100,a=0;
        a=sum(100);
        printf("sum=%d\n",a);
        return 0;
}
gcc test.c
./a.out
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