网站介绍：文章浏览阅读305次。Practice 1:输入一个正整数n，求1+2+3+......+n的和。#include #include int main(){int i,n,sum;printf("Enter n:");scanf("%d",&n);sum=0;for(i=1;i<=n;i++){sum=sum+i;}printf("Sum of numbers from 1 to %d is %d\n",..._"scanf(\"%d\", &n); sum = ; for(i = 1; i <= n; i++){ sum = sum + item; } printf"
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