View Compilation Error

0_0_32333154_10965.cpp: In function 'int main()':
0_0_32333154_10965.cpp:61:16: error: 'x' was not declared in this scope
    scanf("%d",&x);
                ^
0_0_32333154_10965.cpp:62:4: error: 'ch' was not declared in this scope
    ch = getchar();
    ^