Compilare: main.c: In function 'main': main.c:24:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &n, &m ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:26:7: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &a[0][i] ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:31:7: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &q, &p ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~