std::strchr
STD：：strchr
| Defined in header | | |
|---|---|---|
| const char* strchr( const char* str, int ch | | |
| char* strchr( char* str, int ch | | |
查找字符的第一次出现。static_cast<char>(ch)所指向的字节字符串中str...
终止空字符被认为是字符串的一部分。
参数
| str | - | pointer to the null-terminated byte string to be analyzed |
|---|---|---|
| ch | - | character to search for |
返回值
中找到的字符的指针。str，如果没有找到这样的字符，则为空指针。
例
二次
#include <iostream>
#include <cstring>
int main()
{
const char *str = "Try not. Do, or do not. There is no try.";
char target = 'T';
const char *result = str;
while ((result = std::strchr(result, target)) != NULL) {
std::cout << "Found '" << target
<< "' starting at '" << result << "'\n";
// Increment result, otherwise we'll find target at the same location
++result;
}
}
二次
产出：
二次
Found 'T' starting at 'Try not. Do, or do not. There is no try.'
Found 'T' starting at 'There is no try.'
二次
另见
| find | find characters in the string (public member function of std::basic_string) |
|---|---|
| wcschr | finds the first occurrence of a wide character in a wide string (function) |
| strrchr | finds the last occurrence of a character (function) |
| strpbrk | finds the first location of any character from a set of separators (function) |
C.strchr文件
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