Compilare: user.c: In function ‘run’: user.c:20:15: warning: unused variable ‘k’ [-Wunused-variable] int i, j, k; ^ user.c: In function ‘readInput’: user.c:14:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d", &n,&W); ^ user.c:16:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d", &energie[i],&cost[i]); ^