Compilare: main.c: In function 'main': main.c:7:77: warning: implicit declaration of function 'gets' [-Wimplicit-function-declaration] freopen("palindrom2.in","r",stdin),freopen("palindrom2.out","w",stdout),gets(s),printf("%s",s),j=strlen(s)-1; ^~~~ main.c:7:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("palindrom2.in","r",stdin),freopen("palindrom2.out","w",stdout),gets(s),printf("%s",s),j=strlen(s)-1; ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:7:40: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("palindrom2.in","r",stdin),freopen("palindrom2.out","w",stdout),gets(s),printf("%s",s),j=strlen(s)-1; ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ./cc8sJC65.o: In function `main': main.c:(.text.startup+0x35): warning: the `gets' function is dangerous and should not be used.