View Compilation Error

0_0_22092279_7426.cpp: In function 'int main()':
0_0_22092279_7426.cpp:4:9: error: 'ktl' was not declared in this scope
     ktl();
         ^
0_0_22092279_7426.cpp:8:19: error: 'a' was not declared in this scope
         for(int i=a[n][0];i>0;i--)
                   ^