A program to display the Fibonacci sequence, characterised by the fact that every number after the first two is the sum of the two preceding ones

fibonacci.c

/****************************************************************************
 * fibonacci.c
 *
 * Display the Fibonacci sequence, characterised by the fact that every number
 * after the first two is the sum of the two preceding ones
 ***************************************************************************/
 
#include <stdio.h>

int main(void)
{
    int a = 0;
    int b = 1;
    int x = 0;
    
    while(b < 5000)
    {  
        printf("%d\n", a);
        x = b;
        b = a+b;
        a = x;
    }
    return 0;  
}