## Pages

### Write a C program to convert the given decimal number to binary, Octal and Hexadecimal

Convert Decimal to Binary:
```int main()
{
long int decimalNumber,remainder,quotient;
int binaryNumber[100],i=1,j;
printf("Enter any decimal number: ");
scanf("%ld",&decimalNumber);
quotient = decimalNumber;
while(quotient!=0){
binaryNumber[i++]= quotient % 2;
quotient = quotient / 2;
}
printf("Equivalent binary value of decimal number %d: ",decimalNumber);
for(j = i -1 ;j> 0;j--)
printf("%d",binaryNumber[j]);

return 0;
}
output:
Enter any decimal number: 50
Equivalent binary value of decimal number 50: 110010
```
Convert Decimal to Octal:
```int main(){
long int decimalNumber,remainder,quotient;
int octalNumber[100],i=1,j;

printf("Enter any decimal number: ");
scanf("%ld",&decimalNumber);

quotient = decimalNumber;
while(quotient!=0){
octalNumber[i++]= quotient % 8;
quotient = quotient / 8;
}
printf("Equivalent octal value of decimal number %d: ",decimalNumber);
for(j = i -1 ;j> 0;j--)
printf("%d",octalNumber[j]);
return 0;
}
Output:
Enter any decimal number: 50
Equivalent octal value of decimal number 50: 62

2. Easy way to convert decimal number to octal number in c
#include
int main(){
long int decimalNumber;
printf("Enter any decimal number : ");
scanf("%d",&decimalNumber);
printf("Equivalent octal number is: %o",decimalNumber);
return 0;
}
output:
Enter any decimal number: 25
Equivalent octal number is: 31
```
```int main(){
long int decimalNumber,remainder,quotient;
int i=1,j,temp;

printf("Enter any decimal number: ");
scanf("%ld",&decimalNumber);

quotient = decimalNumber;

while(quotient!=0){
temp = quotient % 16;

//To convert integer into character
if( temp < 10)
temp =temp + 48;
else
temp = temp + 55;

quotient = quotient / 16;
}

printf("Equivalent hexadecimal value of decimal number %d: ",decimalNumber);
for(j = i -1 ;j> 0;j--)

return 0;
}

Output:

Enter any decimal number: 45
Equivalent hexadecimal value of decimal number 45: 2D

2. Easy way to convert decimal number to hexadecimal number:

#include
int main(){

long int decimalNumber;

printf("Enter any decimal number: ");
scanf("%d",&decimalNumber);

return 0;
}

Output:
Enter any decimal number: 45