Compilare: main.c: In function 'main': main.c:23:5: warning: ignoring return value of 'fgets', declared with attribute warn_unused_result [-Wunused-result] fgets(t, sizeof t, fin); ^~~~~~~~~~~~~~~~~~~~~~~ main.c:24:5: warning: ignoring return value of 'fgets', declared with attribute warn_unused_result [-Wunused-result] fgets(s, sizeof s, fin); ^~~~~~~~~~~~~~~~~~~~~~~