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#include <stdio.h>
#include <string.h>

typedef char *(*noargstrchr_fnfptr) ();
noargstrchr_fnfptr fp;

int main(void) {
  char *c;
  fp = strchr;
  c = fp(12, 2);
  printf("%s\n", c);
  return 0;
}

#include <string.h>

typedef char *(*twoargstrchr_fnfptr) (const char *, int);
twoargstrchr_fnfptr fp;

int main(void) {
  char *c;
  fp = strchr;
  c = fp("Hello",'H');
  printf("%s\n", c);
  return 0;
}