= memchr =
== Syntax == void *memchr(const void *membuffer, int val, int size) == Arguments == :membuffer ::The string / memory buffer to search :val ::The byte value to search for :size ::The size (in bytes) of the memory block to search. Must be equal to or less than the buffer size, or buffer overrun errors can occur. == Return == Returns a memory location pointer to the first occurrence of the given value in the memory block, or NULL if the value is not found. == Description == memchr searches a block of memory for the first occurrence of a given value. It can be used to find the first appearance of a letter in a string. For PHP programmers, memchr is similar to strpos. == Example == <code> // Allocate memory for a string char *stringbuffer; stringbuffer = malloc(1000); sprintf(stringbuffer, "whatever"); // Search for first letter e char* stringpointer; stringpointer = memchr(stringbuffer, 'e', strlen(stringbuffer)); // Print everything after first // letter e if found, or show // a message if not if (stringpointer != NULL) { // This should print "ever" printf("%s", stringpointer); }else { printf("Character not found."); }// Release the memory again free(stringbuffer); </code> == See Also == |