View Compilation Error

0_0_29743267_23318.cpp: In function 'int main()':
0_0_29743267_23318.cpp:1:34: error: 'gets' was not declared in this scope
 int main(){char c[4];while(gets(c))puts("Yes");return 1;}
                                  ^
0_0_29743267_23318.cpp:1:46: error: 'puts' was not declared in this scope
 int main(){char c[4];while(gets(c))puts("Yes");return 1;}
                                              ^