Compilare: user.c: In function ‘main’: user.c:14:5: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&t); ^~~~~~~~~~~~~~~~~ user.c:16:5: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%c",&c); ^~~~~~~~~~~~~~~~~ user.c:19:9: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(s,1000000,f); ^~~~~~~~~~~~~~~~~~