View Compilation Error

0_0_28572449_20045.cpp: In function 'int main()':
0_0_28572449_20045.cpp:41:8: error: 'space' was not declared in this scope
        space++;
        ^
0_0_28572449_20045.cpp:48:8: error: 'space' was not declared in this scope
        space--;
        ^
0_0_28572449_20045.cpp:54:14: error: 'space' was not declared in this scope
              space--;
              ^
0_0_28572449_20045.cpp:55:34: error: 'space' was not declared in this scope
                 for(int k = 0; k<space; k++)
                                  ^
0_0_28572449_20045.cpp:85:9: error: 'space' was not declared in this scope
         space--;
         ^
0_0_28572449_20045.cpp:89:24: error: 'space' was not declared in this scope
       for(int k = 0; k<space; j++)
                        ^