。
班级成绩输入输出
http://www.nowcoder.com/questionTerminal/60d96b08e1cb42e38629d54e37eac008
#include<bits/stdc++.h> using namespace std; double a[45][45] = {}; double s[45] = {}; int main() { for(int i = 1; i <= 5; i++) { for(int j = 1; j <= 5; j++) { cin >> a[i][j]; s[i] += a[i][j]; } } for(int i = 1; i <= 5; i++) { for(int j = 1; j <= 5; j++) { cout << fixed << setprecision(1) << a[i][j] << " "; } cout << s[i] << endl; } return 0; }