Compilare: main.c: In function 'main': main.c:11:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &n, &m ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:13:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &mat[0][i] ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:21:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &x, &poz ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~