Question

C++ Program with 2 functions

1. Hamming Functions Tester Write a function that displays a menu to test the functions from 2 - 4. You must call the functions from 2 - 4 and cannot reimplement their functionality in this function. The menu is displayed as follows: 1) Enter a 4-bit message to encode into a 7-bit Hamming message. 2) Enter a 7-bit Hamming message to transmit through a noisy channel. 3) Enter a 7-bit Hamming message to receive and correct. 4) Quit. If the user selects 1, the function from Problem 2 is used and so on. All requests for input from the user should be handled inside of this function, and all output to the screen should also be handled inside of this function. Use a while loop to implement the quitting mechanism.

2. Hamming Transmitter Write a function that takes as input a 4-bit string of 0’s and 1’s. Output the 7-bit encoded message. For example, if the passed parameter is 1011, the output should be 0110011.

Answer 1

int hamming(int ar1[],int ar2[]){
        int i,count;
        int res[BITS];
        for(i=0;i<n;i++){
                if((ar1[i]==1 && ar2[i]==0)||(ar1[i]==0 && ar2[i]==1)){
                        res[i] = 1;
                }
                else{
                        res[i] = 0;     
                }       
        }
        count = count_ham(res);
        printf("Hamming distance will be: %d",count);
        printf("\n");
}

#include<stdio.h>
#define BITS 8
int hamming(int ar1[],int ar2[]);
int input(int ar1[]);
int count_ham(int ar[]);
int n;
int main(){
        int ar1[BITS],ar2[BITS];
        printf("Enter the number of bits(max 8-bits):");
        scanf("%d",&n);
        printf("Enter a binary number(space between each bit and MAX 8-bit):");
        input(ar1);
        printf("Enter a binary number(space between each bit and MAX 8-bit):");
        input(ar2);
        hamming(ar1,ar2);
        return 0;
}

int input(int ar1[]){
        int i;  
        for(i=0;i<n;i++){
                scanf("%d",&ar1[i]);
        }
        
}
int count_ham(int ar[]){
        int i,count=0;
        for(i=0;i<n;i++){
                if(ar[i]==1)
                        count++;
        }
        return count;
        
}
int hamming(int ar1[],int ar2[]){
        int i,count;
        int res[BITS];
        for(i=0;i<n;i++){
                if((ar1[i]==1 && ar2[i]==0)||(ar1[i]==0 && ar2[i]==1)){
                        res[i] = 1;
                }
                else{
                        res[i] = 0;     
                }       
        }
        count = count_ham(res);
        printf("Hamming distance will be: %d",count);
        printf("\n");
}