Program of fibonacci Series With explanation | In C

Practice Program

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Program Of Fibonacci Series.

The Fibonacci Sequence is the series of numbers: 0, 1, 1, 2, 3, 5, 8...….    

The next number is found by adding up the two numbers before it.

The 2 is found by adding the two numbers before it (1+1)

The 3 is found by adding the two numbers before it (1+2),

And the 5 is (2+3),and so on!

Solution: through for loop

void main()
{
    int a=0,b=1,c,n,i;

    printf("How many elements  you want in your fibonacci Series: ");
    scanf("%d",&n);

    printf("Fibonacci Series is :");
      printf("%d\t%d\t",a,b);
    for(i=1;i<=(n-2);i++){

     c = a + b;

     printf("%d\t",c);
     a = b;
     b = c;

    }
}

Output1

How many elements you want in your fibonacci Series: 5

Fibonacci Series is : 0       1        1        2        3.

Output2

How many elements you want in your fibonacci Series:10

Fibonacci Series is :
0       1        1        2        3       5       8       13       21       34

Output3

How many elements you want in your fibonacci Series:15

Fibonacci Series is :
0       1        1        2        3       5       8       13       21       34       55       89       144       233       377

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Solution: from while loops

void main()
{
    int a=0,b=1,c,n,i;

    printf("How many elements  you want in your fibonacci Series: ");
    scanf("%d",&n);

     i = 1;
      printf("%d\t%d\t",a,b);
    while(i<=(n-2)){

     c = a + b;

     printf("%d\t",c);
     a = b;
     b = c;

     i++;


    }
}

Solution: from do-while loops

void main()
{
    int a=0,b=1,c,n,i;

    printf("How many elements  you want in your fibonacci Series: ");
    scanf("%d",&n);

     i = 1;
      printf("%d\t%d\t",a,b);
    do{

     c = a + b;

     printf("%d\t",c);
     a = b;
     b = c;

     i++;


    }while(i<=(n-2))
}

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defining a function 'print_fibonacci' which will print fibonacci Series.

void print_fibonacci(int n)
{
    int a=0,b=1,c,i;




      printf("%d\t%d\t",a,b);
    for(i = 1;i<=(n-2);i++){

     c = a + b;

     printf("%d\t",c);
     a = b;
     b = c;



    }
}

Using above define function 'print_fibonacci()':

void main()
{
    int n;

    printf("How many elements  you want in your fibonacci Series: ");
    scanf("%d",&n);
    
    printf("Fibonacci Series is:")
    print_fibonacci(n);
}

Output1

How many elements you want in your fibonacci Series: 5

Fibonacci Series is : 0       1        1        2        3.

Using above define function 'print_fibonacci()':

void main()
{
    int n;

    printf("How many elements  you want in your fibonacci Series: ");
    scanf("%d",&n);
    
    printf("Fibonacci Series is:")
    print_fibonacci(n);
}

Output2

How many elements you want in your fibonacci Series:10

Fibonacci Series is :
0       1        1        2        3       5       8       13       21       34

Using above define function 'print_fibonacci()':

void main()
{
    int n;

    printf("How many elements  you want in your fibonacci Series: ");
    scanf("%d",&n);
    
    printf("Fibonacci Series is:")
    print_fibonacci(n);
}

Output3

How many elements you want in your fibonacci Series:15

Fibonacci Series is :
0       1        1        2        3       5       8       13       21       34       55       89       144       233       377

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