strlen source code

Since it is the first article after the opening, Let's first look at a simple and practical function to enhance your confidence and then step by step to the complexity, it's easy to let it go. I still remember that when I was a beginner in C, I had

Strlen only works as a counter. It starts scanning from a memory location (which can start with a string, a location in the middle, or even an uncertain memory area, the counter value is returned until the first string Terminator '\ 0' is

We know that to judge the string length in php, we only need to use the strlen () and mb_strlen () functions, but it is not as simple as we think, especially when it comes to a mix of Chinese and English, the above functions are a little inadequate.

Strlen only works as a counter. It starts scanning from a memory location (which can start with a string, a location in the middle, or even an uncertain memory area, the counter value is returned until the first string Terminator '\ 0' is

Tony bai Directly operating the string operation functions provided by the C standard library is risky. A slight carelessness may cause memory problems. This week, I wrote a small security string operation library in my spare time. However, after

First directly on the source:size_t strlen (const char * str) {const char *eos = Str;while (*eos++); return (eos-str-1);}You can see that the strlen is using a new char* pointer, which traverses backwards to find the next element in the end of the

sizeof () function 1, what is it?     sizeof is actually an operator, which is the same thing as those +,-, which is parsed when the program is compiled. Although we often see sizeof followed by parentheses, which are similar to functions, they

Write a C-language program simulation to implement the Strlen function.AlgorithmThe function of the Strlen function is to calculate the number of characters in a string. (except for)The string itself is an array of characters, except that the end

Write a C-language program simulation to implement the Strlen function.AlgorithmThe function of the Strlen function is to calculate the number of characters in a string. (except for)The string itself is an array of characters, except that the end

This article illustrates the implementation method of C + + not using variables to find the strlen function of string length. Share to everyone for your reference. The implementation methods are as follows: 1, strlen source code to achieve: