Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
134438 whs 04保留两位小数 C++ Compile Error 0 MS 0 KB 161 2025-10-27 17:01:19

Tests(0/0):

Code:

#include <iostream> using namespace std; int main(){ int a,b,c,d; double a=5.0; double b=2.5; printf("%.2lf",a); printf("%.2lf",b); }

Run Info:

Main.cc: In function 'int main()':
Main.cc:5:12: error: conflicting declaration 'double a'
     double a=5.0;
            ^
Main.cc:4:7: note: previous declaration as 'int a'
   int a,b,c,d;
       ^
Main.cc:6:12: error: conflicting declaration 'double b'
     double b=2.5;
            ^
Main.cc:4:9: note: previous declaration as 'int b'
   int a,b,c,d;
         ^
Main.cc:7:19: warning: format '%lf' expects argument of type 'double', but argument 2 has type 'int' [-Wformat=]
   printf("%.2lf",a);
                   ^
Main.cc:8:21: warning: format '%lf' expects argument of type 'double', but argument 2 has type 'int' [-Wformat=]
     printf("%.2lf",b);
                     ^
Main.cc:4:11: warning: unused variable 'c' [-Wunused-variable]
   int a,b,c,d;
           ^
Main.cc:4:13: warning: unused variable 'd' [-Wunused-variable]
   int a,b,c,d;
             ^