/in/lab4.c: In function 'main':
/in/lab4.c:72:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int i = 0; i < strlen(remain); i++)
                           ^
/in/lab4.c:88:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int i = 0; i < strlen(remain); i++){
                           ^
/in/lab4.c:111:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 for (int i3 = 0; i3 < strlen(remain); i3++)
                                     ^
/in/lab4.c:125:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                     for (int i3 = 0; i3 < strlen(remain); i3++)
                                         ^