Compilare: user.c: In function ‘introducere_chei’: user.c:59:9: warning: unused variable ‘i’ [-Wunused-variable] int i, numar_introd_in_output = 0; ^ user.c: In function ‘main’: user.c:145:38: warning: unused variable ‘numar’ [-Wunused-variable] int nr_linii, nr_chei, nr_carac, numar; ^ user.c: In function ‘introducere_chei’: user.c:61:10: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(str,100,input); ^ user.c:82:14: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(str, 100, input); ^ user.c: In function ‘introducere_elemente’: user.c:117:14: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(str, 100, input); ^