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#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdio.h>
#include <string.h>
#include <assert.h>
int main () {
char str[] = "The Last Supper by Leonardo da Vinci";
char *str_temp;
// Test strstr
str_temp = strstr(str, "Supper"); /* Find a substring in the string */
assert(!strcmp(str_temp, "Supper by Leonardo da Vinci"));
/* Following calls use memory APIs for the above tasks */
// Test memchr
str_temp = (char *)memchr((void *)str, 'L', strlen(str));
assert(!strcmp(str_temp, "Last Supper by Leonardo da Vinci"));
// Test memrchr
str_temp = (char *)memrchr((void *)str, 'L', strlen(str));
assert(!strcmp(str_temp, "Leonardo da Vinci"));
return 0;
}
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