Compilare: main.c: In function 'main': main.c:27:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&cerinta,&n); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:29:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&x,&y); ^~~~~~~~~~~~~~~~~~~~~~~~~ main.c: In function 'generate_prim': main.c:11:16: warning: iteration 999998 invokes undefined behavior [-Waggressive-loop-optimizations] if(ciur[i] == 0){ ~~~~^~~ main.c:10:5: note: within this loop for(i=2;i<=SIZE_MAX;i++){ ^~~