Compilare: main.c: In function 'main': main.c:10:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^~~~~~~~~~~~~~~~~~~ main.c:11:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&k); ^~~~~~~~~~~~~~~~~~~ main.c:16:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&a); ^~~~~~~~~~~~~~~~~~~ main.c:29:3: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(fout,"%d %d %d",x+1,y+1,ma); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:29:3: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]