View Compilation Error

0_0_21750799_16268.cpp: In function 'int main()':
0_0_21750799_16268.cpp:14:23: error: 'n' was not declared in this scope
         scanf("%d%d",&n,&k);
                       ^
0_0_21750799_16268.cpp:14:26: error: 'k' was not declared in this scope
         scanf("%d%d",&n,&k);
                          ^
0_0_21750799_16268.cpp:16:25: error: 'arr' was not declared in this scope
             scanf("%d",&arr[i]);
                         ^
0_0_21750799_16268.cpp:17:14: error: 'arr' was not declared in this scope
         sort(arr,arr+n);
              ^