/in/isSibling.c: In function 'isSibling':
/in/isSibling.c:24:16: error: 'strA' undeclared (first use in this function); did you mean 'strlen'?
             if(strA[j] != strB[j]){
                ^~~~
                strlen
/in/isSibling.c:24:16: note: each undeclared identifier is reported only once for each function it appears in
/in/isSibling.c:24:27: error: 'strB' undeclared (first use in this function); did you mean 'strA'?
             if(strA[j] != strB[j]){
                           ^~~~
                           strA
/in/isSibling.c:18:31: warning: unused variable 'times2' [-Wunused-variable]
         char times1[53]; char times2[53];
                               ^~~~~~
/in/isSibling.c:18:14: warning: unused variable 'times1' [-Wunused-variable]
         char times1[53]; char times2[53];
              ^~~~~~