std::memchr

Header: <cstring>

Converts ch to unsigned char and locates the first occurrence of that value in the initial count bytes (each interpreted as unsigned char) of the object pointed to by ptr.

# Declarations

const void* memchr( const void* ptr, int ch, std::size_t count );

void* memchr( void* ptr, int ch, std::size_t count );

# Parameters

# Return value

Pointer to the location of the byte, or a null pointer if no such byte is found.

# Example

#include <cstring>
#include <iostream>
 
int main()
{
    char arr[] = {'a', '\0', 'a', 'A', 'a', 'a', 'A', 'a'};
    char *pc = (char*) std::memchr(arr, 'A', sizeof arr);
    if (pc != nullptr)
        std::cout << "search character found\n";
    else
        std::cout << "search character not found\n";
}

# See also