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Defined in header <wchar.h> | ||
size_t wcsspn(constwchar_t* dest,constwchar_t* src); | (since C95) | |
Returns the length of the maximum initial segment of the wide string pointed to bydest, that consists of only the characters found in wide string pointed to bysrc.
Contents |
| dest | - | pointer to the null-terminated wide string to be analyzed |
| src | - | pointer to the null-terminated wide string that contains the characters to search for |
The length of the maximum initial segment that contains only characters from wide string pointed to bysrc
#include <locale.h>#include <wchar.h> int main(void){wchar_t dest[]= L"白猫 黑狗 甲虫";constwchar_t src[]= L" 狗猫 白黑 ";constsize_t len= wcsspn(dest, src); dest[len]= L'\0';/* terminates the segment to print it out */ setlocale(LC_ALL,"en_US.utf8");wprintf(L"The length of maximum initial segment is %td.\n" L"The segment is\"%ls\".\n", len, dest);}
Output:
The length of maximum initial segment is 6.The segment is "白猫 黑狗 ".
(C95) | returns the length of the maximum initial segment that consists of only the wide charsnot found in another wide string (function)[edit] |
(C95) | finds the first location of any wide character in one wide string, in another wide string (function)[edit] |
C++ documentation forwcsspn | |
