STMF401RE Nucleo issue

gistfile1.txt

#include "stm32f4xx.h"
																		  
int main (void)
{
    RCC->AHB1RSTR |= RCC_AHB1RSTR_GPIOARST;    // Reset GPIOA 
    RCC->AHB1RSTR = 0;                         // Exit reset state
    
    RCC->AHB1ENR |= RCC_AHB1ENR_GPIOAEN;       // Enable GPIOA clock
    GPIOA->MODER |= GPIO_MODER_MODER5_0;	   // Enable Output on D13
    
    GPIOA->BSRR = GPIO_BSRR_BS_5;			   // Set D13 High

  return 0;
}