Compilare: main.c: In function 'main': main.c:43:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d" ,&n); ^~~~~~~~~~~~~~~~~~~~~ main.c:47:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d" ,&operation); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:49:13: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d" ,&x); ^~~~~~~~~~~~~~~~~~~~~ main.c:58:13: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d" ,&x); ^~~~~~~~~~~~~~~~~~~~~