Compilare: main.c: In function 'main': main.c:13:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&n,&b); ^~~~~~~~~~~~~~~~~~~~~~~~ main.c:17:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&k); ^~~~~~~~~~~~~~~~~~~ main.c:19:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&s,&p); ^~~~~~~~~~~~~~~~~~~~~~~~ main.c:45:22: warning: 'u' may be used uninitialized in this function [-Wmaybe-uninitialized] u--; ~^~ main.c:12:23: warning: 'pr' may be used uninitialized in this function [-Wmaybe-uninitialized] int n,b,k,s,p,j,f,pr,u,i; ^~