View Compilation Error

0_0_21801233_2656.cpp: In function 'int main()':
0_0_21801233_2656.cpp:7:22: error: 'scnaf' was not declared in this scope
         scnaf("%d",&t);
                      ^
0_0_21801233_2656.cpp:9:36: error: 'm' was not declared in this scope
                 scanf("%d%d%d",&n,&m,&k);
                                    ^
0_0_21801233_2656.cpp:9:39: error: 'k' was not declared in this scope
                 scanf("%d%d%d",&n,&m,&k);
                                       ^
0_0_21801233_2656.cpp:15:45: error: 'cnt' was not declared in this scope
                                 if(a[i]>=m) cnt++;
                                             ^