Compilare: main.c: In function 'main': main.c:49:22: warning: format '%lld' expects argument of type 'long long int', but argument 3 has type 'int64_t {aka long int}' [-Wformat=] fprintf(out, "%lld\n", max); ^ main.c:19:7: warning: unused variable 'coins_count' [-Wunused-variable] int coins_count = sizeof(coins) / sizeof(coins[0]); ^~~~~~~~~~~ main.c:16:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%*c", &t); ^~~~~~~~~~~~~~~~~~~~~~~~ main.c:24:4: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%*c", &n); ^~~~~~~~~~~~~~~~~~~~~~~~ main.c:30:6: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%*c", &data[j]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~