View Compilation Error

0_0_15126791_7978.cpp: In function 'int main()':
0_0_15126791_7978.cpp:65:14: error: 'i' was not declared in this scope
         for (i = 0 ; i < q ; i++ )
              ^
0_0_15126791_7978.cpp:71:15: error: 'i' was not declared in this scope
         for ( i = 0 ; i < q ; i++ )
               ^
0_0_15126791_7978.cpp:86:15: error: 'i' was not declared in this scope
         for ( i = 0 ; i < q ; i++ )
               ^