View Compilation Error

0_0_19123952_3494.cpp: In function 'int main()':
0_0_19123952_3494.cpp:4:27: error: 'scanf' was not declared in this scope
  while(scanf("%d %d",&n,&m)!=EOF)
                           ^
0_0_19123952_3494.cpp:4:30: error: 'EOF' was not declared in this scope
  while(scanf("%d %d",&n,&m)!=EOF)
                              ^
0_0_19123952_3494.cpp:16:19: error: 'printf' was not declared in this scope
         printf(" ");
                   ^
0_0_19123952_3494.cpp:17:18: error: 'printf' was not declared in this scope
     printf("%d",i);
                  ^
0_0_19123952_3494.cpp:22:16: error: 'printf' was not declared in this scope
     printf("no");
                ^
0_0_19123952_3494.cpp:23:16: error: 'printf' was not declared in this scope
     printf("\n");
                ^