View Compilation Error

0_0_29211994_1682.cpp: In function 'int main()':
0_0_29211994_1682.cpp:61:13: error: 'b' was not declared in this scope
             b[i]=a[i];
             ^
0_0_29211994_1682.cpp:62:13: error: 'in' was not declared in this scope
             in[i]=0;
             ^
0_0_29211994_1682.cpp:73:14: error: 'b' was not declared in this scope
         sort(b+1,b+1+n);
              ^
0_0_29211994_1682.cpp:82:13: error: 'c' was not declared in this scope
             c[i]=pos;
             ^
0_0_29211994_1682.cpp:84:9: error: 'in' was not declared in this scope
         in[c[1]]++;
         ^
0_0_29211994_1682.cpp:84:12: error: 'c' was not declared in this scope
         in[c[1]]++;
            ^