递归
#include<stdio.h>//递归
int my_strlen(char *str)
{
if (*str != '\0')
{
return 1 + my_strlen(str + 1);
}
else
return 0;
}
int main()
{
char *p = "abcdef";
printf("%d\n", my_strlen(p));
system("pause");
return 0;
}
非递归
#include<stdio.h>//非递归
int my_strlen(char *str)
{
int count = 0;
while (*str != '\0')
{
count++;
str++;
}
return count;
}
int main()
{
char *p = "abcdef";
printf("%d\n", my_strlen(p));
system("pause");
return 0;
}