Compilare: main.c: In function 'chr': main.c:18:3: warning: ignoring return value of 'fread', declared with attribute warn_unused_result [-Wunused-result] fread( buf, 1, BSIZE, fin ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c: In function 'main': main.c:98:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d%d%d", &l, &c, &length, &height ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~