Compilare: main.c: In function 'main': main.c:26:29: warning: unused variable 'ant' [-Wunused-variable] int n, i, a, len, pos, j, ant, l; ^~~ main.c:26:26: warning: unused variable 'j' [-Wunused-variable] int n, i, a, len, pos, j, ant, l; ^ main.c:28:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &n, &a ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:34:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &a ); ^~~~~~~~~~~~~~~~~~~~~~~