Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
145930 张奕杨 11计算分段函数的值 C++ Compile Error 0 MS 0 KB 263 2026-01-25 19:41:35

Tests(0/0):

Code:

#include<bits/stdc++.h> using namespace std; int main(){ int a; cin>>a; if(0<=a&&a<5) printf("%.3lf",-1*x+2.5); else if(5<=a&&a<10) printf("%.3lf",2-1.5*(x-3)*2); else if(5<=a&&a<10) printf("%.3lf",double(x)/2.0-1.5); return 0; }

Run Info:

Main.cc: In function 'int main()':
Main.cc:6:37: error: 'x' was not declared in this scope
     if(0<=a&&a<5) printf("%.3lf",-1*x+2.5);
                                     ^
Main.cc:7:47: error: 'x' was not declared in this scope
     else if(5<=a&&a<10) printf("%.3lf",2-1.5*(x-3)*2);
                                               ^
Main.cc:8:47: error: 'x' was not declared in this scope
     else if(5<=a&&a<10) printf("%.3lf",double(x)/2.0-1.5);
                                               ^