Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
104859 王昕怡 04圆的面积 C++ Compile Error 0 MS 0 KB 348 2025-01-11 16:42:07

Tests(0/0):

Code:

#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ double p=3.1415926,r,s; cin>>r; s=r*r*p; printf("%.2lf",q); return 0; }

Run Info:

Main.cc: In function 'int main()':
Main.cc:11:20: error: 'q' was not declared in this scope
     printf("%.2lf",q);
                    ^