Compilare: main.c: In function 'main': main.c:5:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("cmlsc.in","r",stdin),freopen("cmlsc.out","w",stdout),scanf("%c%c",&n,&m); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:5:35: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("cmlsc.in","r",stdin),freopen("cmlsc.out","w",stdout),scanf("%c%c",&n,&m); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:5:67: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] freopen("cmlsc.in","r",stdin),freopen("cmlsc.out","w",stdout),scanf("%c%c",&n,&m); ^~~~~~~~~~~~~~~~~~~ main.c:7:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%c",x+i); ^~~~~~~~~~~~~~~ main.c:9:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%c",y+i); ^~~~~~~~~~~~~~~