foo.cc:31:6: error: redefinition of 'bool f'
   31 | bool f;
      |      ^
foo.cc:6:6: note: 'bool f' previously declared here
    6 | bool f;
      |      ^
foo.cc:32:6: error: redefinition of 'char am(char, int, int)'
   32 | char am(char b,int k,int c){
      |      ^~
foo.cc:7:6: note: 'char am(char, int, int)' previously defined here
    7 | char am(char b,int k,int c){
      |      ^~
foo.cc:38:6: error: redefinition of 'void hy1()'
   38 | void hy1(){
      |      ^~~
foo.cc:13:6: note: 'void hy1()' previously defined here
   13 | void hy1(){
      |      ^~~
foo.cc:48:5: error: redefinition of 'int main()'
   48 | int main(){
      |     ^~~~
foo.cc:23:5: note: 'int main()' previously defined here
   23 | int main(){
      |     ^~~~
foo.cc: In function 'int main()':
foo.cc:49:17: error: 's1' was not declared in this scope; did you mean 'y1'?
   49 |         cin>>n>>s1>>s2>>s3;
      |                 ^~
      |                 y1
foo.cc:49:21: error: 's2' was not declared in this scope; did you mean 's'?
   49 |         cin>>n>>s1>>s2>>s3;
      |                     ^~
      |                     s
foo.cc:49:25: error: 's3' was not declared in this scope; did you mean 's'?
   49 |         cin>>n>>s1>>s2>>s3;
      |                         ^~
      |                         s

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