Compilare: user.c: In function ‘main’: user.c:9:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d",&n,&m,&k); ^ user.c:11:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&a[i]); ^ user.c:13:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&b[i]); ^ user.c:8:47: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] int i,j,k,n,m,st,dr,rasp=2000000000,pas,x,y; ^ user.c:37:23: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(j-k+1<x){ ^