C code for how to convert large binary to octal.

C code for how to convert large binary to octal.

#include<stdio.h>

#define MAX 1000

int main(){

   

    char binaryNumber[MAX],octalNumber[MAX];

    long int i=0,j=0;

    printf("Enter any number any binary number: ");

    scanf("%s",binaryNumber);

    while(binaryNumber[i]){

      binaryNumber[i] = binaryNumber[i] -48;

      ++i;

    }

    --i;

    while(i-2>=0){

    octalNumber[j++] = binaryNumber[i-2] *4 +  binaryNumber[i-1] *2 + binaryNumber[i] ;

    i=i-3;

    }

    if(i ==1)

      octalNumber[j] = binaryNumber[i-1] *2 + binaryNumber[i] ;

    else if(i==0)

      octalNumber[j] =  binaryNumber[i] ;

    else

      --j;

    printf("Equivalent octal value: ");

    while(j>=0){

      printf("%d",octalNumber[j--]);

    }

    return 0;

}

Sample output:

Enter any number any binary number: 1111111111111111111

1111111111111111111111111111111111111111111111111111111

1111111111111111111111111111111111111111111111111111111
1111111111111111111111111111111111111111111111111111111
1111111111111111111111111111111111111111111111111111111
11111111

Equivalent octal value: 3777777777777777777777777777777

7777777777777777777777777777777777777777777777777777

C program c program to convert binary to octal.

C program c program to convert binary to octal.

#include<stdio.h>

int main(){

   

    long int binaryNumber,octalNumber=0,j=1,remainder;

    printf("Enter any number any binary number: ");

    scanf("%ld",&binaryNumber);

    while(binaryNumber!=0){

         remainder=binaryNumber%10;

        octalNumber=octalNumber+remainder*j;

        j=j*2;

        binaryNumber=binaryNumber/10;

    }

    printf("Equivalent octal value: %lo",octalNumber);

    return 0;

}

Sample output:

Enter any number any binary number: 1101

Equivalent hexadecimal value: 15

C program for hexadecimal to binary conversion.

C program for hexadecimal to binary conversion.

#include<stdio.h>

#define MAX 1000

int main(){

    char binaryNumber[MAX],hexaDecimal[MAX];

    long int i=0;

    printf("Enter any hexadecimal number: ");

    scanf("%s",hexaDecimal);

    printf("\nEquivalent binary value: ");

    while(hexaDecimal[i]){

         switch(hexaDecimal[i]){

             case '0': printf("0000"); break;

             case '1': printf("0001"); break;

             case '2': printf("0010"); break;

             case '3': printf("0011"); break;

             case '4': printf("0100"); break;

             case '5': printf("0101"); break;

             case '6': printf("0110"); break;

             case '7': printf("0111"); break;

             case '8': printf("1000"); break;

             case '9': printf("1001"); break;

             case 'A': printf("1010"); break;

             case 'B': printf("1011"); break;

             case 'C': printf("1100"); break;

             case 'D': printf("1101"); break;

             case 'E': printf("1110"); break;

             case 'F': printf("1111"); break;

             case 'a': printf("1010"); break;

             case 'b': printf("1011"); break;

             case 'c': printf("1100"); break;

             case 'd': printf("1101"); break;

             case 'e': printf("1110"); break;

             case 'f': printf("1111"); break;

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

         }

         i++;

    }

    return 0;

}

Sample output:

Enter any hexadecimal number: 2AD5

Equivalent binary value: 0010101011010101

C program to change octal to decimal.

C program to change octal to decimal.

#include<stdio.h>

int main(){

   

    long int octalNumber;

    printf("Enter any octal number: ");

    scanf("%o",&octalNumber);

    printf("Equivalent decimal number is: %d",octalNumber);

    return 0;

}

Sample output:

Enter any octal number: 17

Equivalent decimal number is: 15

C code to convert octal number to decimal number.

C code to convert octal number to decimal number.

#include<stdio.h>

#include<math.h>

int main(){

   

    long int octal,decimal =0;

    int i=0;

    printf("Enter any octal number: ");

    scanf("%ld",&octal);

    while(octal!=0){

         decimal = decimal + (octal % 10) * pow(8,i++);

         octal = octal/10;

    }

    printf("Equivalent decimal value: %ld",decimal);

   return 0;

}

Sample output:

Enter any octal number: 346

Equivalent decimal value: 230

C program to convert binary to octal.

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