Compilare: main.c: In function 'main': main.c:137:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &N); ^~~~~~~~~~~~~~~~~~~~ main.c:141:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( in, "%d", &instr ); ^~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:144:17: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( in, "%d", &val ); ^~~~~~~~~~~~~~~~~~~~~~~~ main.c:148:17: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( in, "%d", &val ); ^~~~~~~~~~~~~~~~~~~~~~~~