运行 ID: 29612

Main.cc: In function ‘int main()’:
Main.cc:16:17: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
     if(a[i-1][j]='.') a[i-1][j]='@';
        ~~~~~~~~~^~~~
Main.cc:17:17: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
     if(a[i+1][j]='.') a[i+1][j]='@';
        ~~~~~~~~~^~~~
Main.cc:18:17: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
     if(a[i][j-1]='.') a[i][j-1])='@';
        ~~~~~~~~~^~~~
Main.cc:18:32: error: expected ‘;’ before ‘)’ token
     if(a[i][j-1]='.') a[i][j-1])='@';
                                ^
Main.cc:18:31: warning: statement has no effect [-Wunused-value]
     if(a[i][j-1]='.') a[i][j-1])='@';
                       ~~~~~~~~^
Main.cc:19:17: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
     if(a[i][j+1]='.') a[i][j+1])='@';   
        ~~~~~~~~~^~~~
Main.cc:19:32: error: expected ‘;’ before ‘)’ token
     if(a[i][j+1]='.') a[i][j+1])='@';   
                                ^
Main.cc:19:31: warning: statement has no effect [-Wunused-value]
     if(a[i][j+1]='.') a[i][j+1])='@';   
                       ~~~~~~~~^
Main.cc:25:14: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
    if(a[i][j]='@') cnt++;
       ~~~~~~~^~~~