View Compilation Error

0_0_26768782_23374.cpp: In function 'int main()':
0_0_26768782_23374.cpp:4:31: error: 'scanf' was not declared in this scope
  while(scanf("%d%d%d",&a,&b,&c)!=EOF)
                               ^
0_0_26768782_23374.cpp:4:34: error: 'EOF' was not declared in this scope
  while(scanf("%d%d%d",&a,&b,&c)!=EOF)
                                  ^
0_0_26768782_23374.cpp:7:22: error: 'printf' was not declared in this scope
   printf("NO CRASH\n");
                      ^
0_0_26768782_23374.cpp:9:24: error: 'printf' was not declared in this scope
   printf("CRASH %d\n",a);
                        ^
0_0_26768782_23374.cpp:11:24: error: 'printf' was not declared in this scope
   printf("CRASH %d\n",b);
                        ^
0_0_26768782_23374.cpp:13:24: error: 'printf' was not declared in this scope
   printf("CRASH %d\n",c);
                        ^