View Compilation Error

0_0_16034387_6655.cpp:12:1: error: expected initializer before 'void'
 void init()
 ^
0_0_16034387_6655.cpp: In function 'int main()':
0_0_16034387_6655.cpp:43:8: error: 'init' was not declared in this scope
   init();
        ^
0_0_16034387_6655.cpp:61:14: error: 'cmp' was not declared in this scope
   sort(s,s+k,cmp);
              ^