Eroare de compilare: main.c: In function 'main': main.c:9:13: error: 'o' undeclared (first use in this function) for(o=i=1;i<k&&o;i++) ^ main.c:9:13: note: each undeclared identifier is reported only once for each function it appears in main.c:12:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(o) ^ main.c:5:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("permutari.in","r",stdin),freopen("permutari.out","w",stdout),scanf("%hd",&n); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:5:39: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("permutari.in","r",stdin),freopen("permutari.out","w",stdout),scanf("%hd",&n); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:5:75: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] freopen("permutari.in","r",stdin),freopen("permutari.out","w",stdout),scanf("%hd",&n); ^~~~~~~~~~~~~~~ Non zero exit status: 1