Octal to binary conversion in c

---

---

C program to convert binary to octal

#include<stdio.h>

#define MAX 1000

int main(){

   

    char octalNumber[MAX];

    long int i=0;

    printf("Enter any octal number: ");

    scanf("%s",octalNumber);

    printf("Equivalent binary value: ");

    while(octalNumber[i]){

        switch(octalNumber[i]){

             case '0': printf("000"); break;

             case '1': printf("001"); break;

             case '2': printf("010"); break;

             case '3': printf("011"); break;

             case '4': printf("100"); break;

             case '5': printf("101"); break;

             case '6': printf("110"); break;

             case '7': printf("111"); break;

             default:  printf("\nInvalid octal digit %c ",octalNumber[i]); return 0;

    }

    i++;

 }

    return 0;

}

Sample output:

Enter any octal number: 123

Equivalent binary value: 001010011

---

Algorithm:

Octal to binary conversion method:

To convert or change the octal number to binary number replace the each octal digits by a binary number using octal to binary chart.

Octal	Binary
0	000
1	001
2	010
3	011
4	100
5	101
6	110
7	111

Octal to binary table

Octal to binary conversion examples:

For example we want to convert or change octal number 65201 to decimal. For this we will replace each octal digit to binary values using the above table:

Octal number:   6   5   2   0   1

Binary values: 110 101 010 000 001

So (65201)₈ = (110101010000001)₂

---

---

1. Write a c program to convert decimal number to binary number.

2. Write a c program to convert decimal number to octal number.
3. Write a c program to convert decimal number to  hexadecimal number.
4. Write a c program to convert octal number to binary number.

5. Write a c program to convert octal number to decimal number.

6. Write a c program to convert octal number to hexadecimal number.

7. Write a c program to convert hexadecimal number to binary number.

8. Write a c program to convert hexadecimal number to octal number.
9. Write a c program to convert hexadecimal number to decimal number.
10. Write a c program to convert binary number to octal number.

11. Write a c program to convert binary number to decimal number.

12. Write a c program to convert binary number to hexadecimal number.
13. C program for addition of binary numbers . 
14. C program for multiplication of two binary numbers.
15. C program fractional binary conversion from decimal.
16. C program for fractional decimal to binary fraction conversion.
17. C program to convert decimal number to roman.
18. C program to convert roman number to decimal number.
19. C program to convert each digits of a number in words
20. C program to convert currency or number in word.

21. Big list of c program examples