Compilare: main.c: In function 'main': main.c:36:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &n, &m, &k); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:39:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &p[i]); ^~~~~~~~~~~~~~~~~~~~~~~~ main.c:42:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &c[i]); ^~~~~~~~~~~~~~~~~~~~~~~~