Compilare: user.c: In function ‘main’: user.c:26:9: warning: pointer targets in passing argument 1 of ‘strlen’ differ in signedness [-Wpointer-sign] lineSize[index1] = strlen(lines[index1]); ^ In file included from user.c:2:0: /usr/include/string.h:399:15: note: expected ‘const char *’ but argument is of type ‘unsigned char *’ extern size_t strlen (__const char *__s) ^ user.c: In function ‘calculateOverlaps’: user.c:57:13: warning: implicit declaration of function ‘matchOverlap’ [-Wimplicit-function-declaration] overlaps[i][j] = matchOverlap(lines[i], lines[j]); ^ user.c: In function ‘matchOverlap’: user.c:71:9: warning: unused variable ‘counter’ [-Wunused-variable] int counter = 0; ^ user.c: In function ‘main’: user.c:21:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%hu", &numberOfLines); ^ user.c:25:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s", lines[index1]); ^