Write Fibonacci sequence in C program

#include <stdio.h>

int main()
{
int n, first = 0, second = 1, next, c;

printf("Enter the number of terms\n");
scanf("%d", &n);

printf("First %d terms of Fibonacci series are:\n", n);

for (c = 0; c < n; c++)
{
if (c <= 1)
next = c;
else
{
next = first + second;
first = second;
second = next;
}
printf("%d\n", next);
}

return 0;
}

Write Fibonacci sequence in C program and explain each step