/in/HW6.cpp: In function 'int main()':
/in/HW6.cpp:39:13: error: 'gets' was not declared in this scope
             gets(s2);
             ^~~~
/in/HW6.cpp:39:13: note: suggested alternative: 'fgets'
             gets(s2);
             ^~~~
             fgets
/in/HW6.cpp:67:13: error: 'gets' was not declared in this scope
             gets(s2);
             ^~~~
/in/HW6.cpp:67:13: note: suggested alternative: 'fgets'
             gets(s2);
             ^~~~
             fgets
/in/HW6.cpp:105:13: error: 'gets' was not declared in this scope
             gets(s2);
             ^~~~
/in/HW6.cpp:105:13: note: suggested alternative: 'fgets'
             gets(s2);
             ^~~~
             fgets
/in/HW6.cpp:148:13: error: 'gets' was not declared in this scope
             gets(s2);
             ^~~~
/in/HW6.cpp:148:13: note: suggested alternative: 'fgets'
             gets(s2);
             ^~~~
             fgets