C语言 strlen()和 sizeof()的区别
(2017-10-27 06:51:22)
标签：
c语言strlen()和sizeo
strlen()
sizeof()
strlen()和sizeof()的
分类：
C
The previous chapter unleashed the sizeof operator, which gives the
size of things in bytes.The strlen() function gives the length of a
string in characters. Because it takes one byte to hold one
character, you might suppose that both would give the same result
when applied to a string, but they don’t.
#include
#include
#define PRAISE "You are an extraordinary being."
int main(void)
{
char name[40];
printf("What's your name? ");
scanf("%s", name);
printf("Hello, %s. %s\n", name, PRAISE);
printf("Your name of %d letters occupies %d memory cells.\n",
strlen(name), sizeof name);
printf("The phrase of praise has %d letters ",
strlen(PRAISE));
printf("and occupies %d memory cells.\n", sizeof PRAISE);
return 0;
}
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