View Compilation Error

0_0_16842273_8477.cpp: In function 'void In(int&)':
0_0_16842273_8477.cpp:69:8: error: 'ww' was not declared in this scope
     do ww=getchar();while(ww<'0'||ww>'9');
        ^
0_0_16842273_8477.cpp:69:27: error: 'ww' was not declared in this scope
     do ww=getchar();while(ww<'0'||ww>'9');
                           ^
0_0_16842273_8477.cpp: In function 'void Out(int)':
0_0_16842273_8477.cpp:77:14: error: 'o' was not declared in this scope
     while(d){o[++top]=d%10+'0';d/=10;}
              ^
0_0_16842273_8477.cpp:78:23: error: 'o' was not declared in this scope
     while(top)putchar(o[top--]);
                       ^