C String Length: Using strlen() Function

1 year ago
Ava Mitchell
1 minute

In C language, you can use the strlen() function to determine the number of characters in a string. The strlen() function returns an integer representing the length of the string, which is the count of characters (excluding the null character ‘\0’). Here is an example:

#include <stdio.h>
#include <string.h>

int main() {
    char str[] = "Hello World";
    int len = strlen(str);
    
    printf("字符串的长度为：%d\n", len);
    
    return 0;
}

In the example above, we defined a string “Hello World”, used the strlen() function to get its length, and finally printed it out. The output result will be:

字符串的长度为：11
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