So I’m coding in C and compiling with gcc, I was attempting to create a simple code to display the Fibonacci sequence, you can input the amount of digits of the sequence you’d like to be displayed. Instead of the expected 0 1 1 2 3 5 8 etc. I get 0 1 1 2 3 4 5 6 7 etc. And I can’t figure out why, if I remove the second “while” from the code, it works as intended, but that’s a problem since with every execution of the while command, you’d get 2 digits of the sequence, if I wanted 9 digits, I’d get 10 instead. Do variables lose their values if they’re inside multiple “while”s? Please help me figure this out. Again I’m a beginner so try to keep it simple.

My code:

#include <stdio.h>

int main()
{
    int num, num1 = 0, num2 = 1, cont = 0;
    printf("Insert the amount of digits of the Fibonacci sequence you'd like to display: \n");
    scanf("%d", &num);
    if(num == 1){
        printf("%d ", num1);
    }    
    if(num >= 2){
        printf("%d ", num1);
        printf("%d ", num2);
    }
    while(cont < num - 2){
        num1 = num1 + num2;
        printf("%d ", num1);
        cont++;
        while(cont < num - 2){
            num2 = num1 + num2;
            printf("%d ", num2);
            cont++;
        }    
    }
    
    return 0;
}