Compilare: main.c: In function 'main': main.c:9:1: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^~~~~~~~~~~~~~~~~ main.c:10:1: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&a); ^~~~~~~~~~~~~~~~~ main.c:11:1: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&b); ^~~~~~~~~~~~~~~~~