Question

6.19 LAB: Convert to binary - functions

Write a program that takes in a positive integer as input, and outputs a string of 1's and 0's representing the integer in binary. For an integer x, the algorithm is:

As long as x is greater than 0
   Output x % 2 (remainder is either 0 or 1)
   x = x / 2

Note: The above algorithm outputs the 0's and 1's in reverse order. You will need to write a second function to reverse the string.

Ex: If the input is:

6

the output is:

110

Your program must define and call the following two functions. The IntegerToReverseBinary function should assign binaryValue with a string of 1's and 0's representing the integerValue in binary (in reverse order). The ReverseString function should assign reversedString with the reverse of inputString.

void IntegerToReverseBinary(int integerValue, char binaryValue[])
void ReverseString(char inputString[], char reversedString[])

PRORGAM IN C

Answer 1

#include
#include
#include // for strlen
// declare functions
void IntegerToReverseBinary(int integerValue, char binaryValue[]);
void ReverseString(char inputString[], char reversedString[]);
int main()
{
   // variable and array declarations
   int integerValue;
   char binaryValue[20];
   char reversedString[20];
   int i;
   printf("Enter integer: "); // print message
   scanf("%d",&integerValue); // take input
   IntegerToReverseBinary(integerValue,binaryValue); // call func
   ReverseString(binaryValue,reversedString); // call func
   printf("In Binary: "); // print message
   for(i = 0; reversedString[i]!='\0'; i++){ // print string
       printf("%c",reversedString[i]);
   }
}
void IntegerToReverseBinary(int integerValue, char binaryValue[]){
   int i = 0;
while (integerValue > 0) { // run till integervalue >0
// storing remainder in binary array
binaryValue[i] = (integerValue % 2)+'0'; // '0' convert int to char
       integerValue = integerValue / 2; // decrease value
i++;
}
   binaryValue[i] = '\0'; // set null to last index
}
void ReverseString(char inputString[], char reversedString[]){
   int len = strlen(inputString); // get len of input string
   int i = 0,j ; // variable declaration
   for(j=len-1; j>=0; j--){ // reverse string
       reversedString[i] = inputString[j];
       i++;
   }
   reversedString[i] = '\0'; // set null to last character
}

/* OUTPUT */