View Compilation Error

0_0_19255943_15506.cpp: In function 'int main()':
0_0_19255943_15506.cpp:3:7: error: 'S' was not declared in this scope
     S();
       ^
0_0_19255943_15506.cpp:4:5: error: 'ul' was not declared in this scope
     ul t,p;
     ^
0_0_19255943_15506.cpp:5:9: error: 't' was not declared in this scope
     rdu(t);
         ^
0_0_19255943_15506.cpp:5:10: error: 'rdu' was not declared in this scope
     rdu(t);
          ^
0_0_19255943_15506.cpp:7:13: error: 'p' was not declared in this scope
         rdu(p);
             ^
0_0_19255943_15506.cpp:8:11: error: 'solve' has not been declared
         p=solve::work(p);
           ^
0_0_19255943_15506.cpp:9:14: error: 'pru' was not declared in this scope
         pru(p),putc('\n');
              ^
0_0_19255943_15506.cpp:9:25: error: 'putc' was not declared in this scope
         pru(p),putc('\n');
                         ^
0_0_19255943_15506.cpp:11:14: error: 'putc' was not declared in this scope
     putc(-1,1);
              ^