WebMar 13, 2024 · C++编程之CString、string与、char数组的转换 ... 然后我们使用 `strtol` 函数把 32 位二进制变量转换为十进制数，并使用 `sprintf` 函数把十进制数转换为 ASCII 码单个字节数组，最后使用 `printf` 函数输出 ASCII 码单个字节数组。 希望这段代码能够帮助你。 Webstrtol () — Convert character string to long Standards Format #include long int strtol (const char * __restrict__nptr, char ** __restrict__endptr, int base); General description Converts nptr , a character string, to a long int value. The function decomposes the entire string into three parts:
C++中各种类型转换总结_百度文库
WebJun 22, 2016 · string testString = "ANYTHING"; cout << "testString = " << testString << endl; char *endptr; int testInt = strtol (testString.c_str (),&endptr,0); if (**endptr) cout << "bad input"; Share Follow answered Jun 22, 2016 at 0:08 pm100 47.2k 23 82 141 WebInterprets an unsigned integer value in a byte string pointed to by str.. Discards any whitespace characters (as identified by calling isspace) until the first non-whitespace character is found, then takes as many characters as possible to form a valid base-n (where n=base) unsigned integer number representation and converts them to an integer value. goals of plant breeding
Null-terminated byte strings - cppreference.com
WebC-string beginning with the representation of an integral number. Return Value On success, the function returns the converted integral number as an int value. If the converted value would be out of the range of representable values by an int, it causes undefined behavior. See strtol for a more robust cross-platform alternative when this is a ... WebC string containing the delimiter characters. These can be different from one call to another. Return Value If a token is found, a pointer to the beginning of the token. Otherwise, a null pointer. A null pointer is always returned when the end of the string (i.e., a null character) is reached in the string being scanned. Example WebFunction prototype of C strtol () long strtol ( const char *sPtr, char **endPtr, int base ); where, sPtr = string representing an integer number. endPtr = pointer set by the function to the next character in sPtr after integer … goals of physical education