Eroare de compilare: user.c: In function ‘main’: user.c:14:2: warning: implicit declaration of function ‘strlen’ [-Wimplicit-function-declaration] n = strlen(s1); ^ user.c:14:6: warning: incompatible implicit declaration of built-in function ‘strlen’ [enabled by default] n = strlen(s1); ^ user.c:33:21: error: request for member ‘charAt’ in something not a structure or union while (i < n && s1.charAt(i) != s2.charAt(j)) i++; ^ user.c:33:37: error: request for member ‘charAt’ in something not a structure or union while (i < n && s1.charAt(i) != s2.charAt(j)) i++; ^ user.c:13:7: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(s1, MAX_DIM, f); ^ user.c:19:7: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(s2, MAX_DIM, f); ^