Compilare: main.c: In function 'main': main.c:7:73: warning: implicit declaration of function 'gets' [-Wimplicit-function-declaration] freopen("password.in","r",stdin),freopen("password.out","w",stdout),gets(s),n=strlen(s)-1,p=l=1; ^~~~ main.c:7:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("password.in","r",stdin),freopen("password.out","w",stdout),gets(s),n=strlen(s)-1,p=l=1; ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:7:38: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("password.in","r",stdin),freopen("password.out","w",stdout),gets(s),n=strlen(s)-1,p=l=1; ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ./ccCCzJVF.o: In function `main': main.c:(.text.startup+0x38): warning: the `gets' function is dangerous and should not be used.