/in/lab4.c: In function 'main':
/in/lab4.c:173:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                     for (int i=0; i<strlen(name); i++)
                                    ^
/in/lab4.c: In function 'comnum':
/in/lab4.c:237:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0; i<strlen(ch)-1; i++)
                    ^
/in/lab4.c: In function 'insert0':
/in/lab4.c:291:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int i = 0; i < strlen(ch) - 1; i++)
                           ^