Compilare: main.c: In function 'main': main.c:59:17: warning: unused variable 'min_3' [-Wunused-variable] int max_2 = 0, min_3 = 0; ^~~~~ main.c:59:6: warning: unused variable 'max_2' [-Wunused-variable] int max_2 = 0, min_3 = 0; ^~~~~ main.c:57:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &k); ^~~~~~~~~~~~~~~~~~~~~ main.c:62:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &v[i][0]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~