Wrong Answer
/in/foo.c: In function 'main':
/in/foo.c:10:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
gets(str);
^~~~
In file included from /in/foo.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
extern char *gets (char *__s) __wur __attribute_deprecated__;
^~~~
/tmp/ccbA3Jfu.o: In function `main':
foo.c:(.text.startup+0xe): warning: the `gets' function is dangerous and should not be used.
代码
#include <stdio.h>
#include <ctype.h>
#define N 5
#define KEY 4
int
main(void)
{
char str[N+1];
gets(str);
for (int i=0; i < N; i++)
{
if (islower(str[i]))
str[i] = (str[i] + KEY - 'a' ) % 26 + 'a';
else if (isupper(str[i]))
str[i] = (str[i] + KEY - 'A' ) % 26 + 'A';
}
for (char *p=str; *p != '\0'; p++)
printf("%c", *p);
return 0;
}
