Compilare: main.c: In function 'main': main.c:19:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &n, &m ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:24:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d%d", &i, &j, &d ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:35:24: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized] if ( x <= MAX && y <= MAX ) { ^ main.c:35:12: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] if ( x <= MAX && y <= MAX ) { ^