Compilare: main.c: In function 'main': main.c:10:12: warning: unused variable 'cmmdc' [-Wunused-variable] int a, b, cmmdc = 1; ^~~~~ main.c:12:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(input, "%d", &a); ^~~~~~~~~~~~~~~~~~~~~~~ main.c:13:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(input, "%d", &b); ^~~~~~~~~~~~~~~~~~~~~~~