int f(int n){if(n=2)return 0;else return(n+f(n-2)）;}void main(){ - 题库学习平台

int f(int n){if(n=2)return 0;else return(n+f(n-2)）;}void main(){int a=10;printf("%d\n",f(a));}
【正确答案】：28

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