Compilare: main.c: In function 'main': main.c:23:33: warning: unused variable 'max' [-Wunused-variable] long long int max1=0,max2=0,max=0,sum=0; ^~~ main.c:11:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(flip_in,"%u",&N); ^~~~~~~~~~~~~~~~~~~~~~~ main.c:12:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(flip_in,"%u",&M); ^~~~~~~~~~~~~~~~~~~~~~~ main.c:29:13: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(flip_in,"%lli",&x); ^~~~~~~~~~~~~~~~~~~~~~~~~