计算从1到输入整数之间的奇数之和

#include<stdio.h>

int main(){

int n;

scanf("%d",&n);

int sum=0;//sum用来保存值，初始值设为0

for(int i=1;i<=n;i+=2){//+=2保证为奇数，因为初始值为1

sum=sum+i;

}

printf("%d\n",sum);

return 0;

}

#include<stdio.h> int main(){ int n; scanf("%d",&n); int sum=0; for(int i=1;i<=n;i+=2){ sum=sum+i; } printf("%d\n",sum); return 0; }