Question

Help please!

Program in C

Problem-4

Write a function that receives an unsigned number and generates and returns a new number

that may or may not have an error in it. An error on a random bit must be introduced

randomly. Use the rand function to generate 0 or 1 to see if the error needs to be generated

and use a rand function in the range of 1 to 32 to see on which bit positon the error needs to

be introduced. The number with the given error must be the return value.

Answer 1

`Hey,

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#include <stdio.h>
#include <stdlib.h>
#include <time.h>

// Function used to generate error integer if a=1 else return number as it is
// srand function to generate random number along with rand()%n
//srand() is random seed in order to generate random numbers each time we run the program.
unsigned int findError(unsigned int num)
{
srand(time(NULL));

//a is generated randomly either 0 or 1
unsigned int y, a=rand()%2;
//a =1 means error need to be introduced
if(a==1)
{
// pos is generated randomly between 1 to 32
int pos = rand()%32+1;
//make a left shift in 1 to pos-1 time to reach to bit where error need to be introduced
y= 1<<(pos-1);
//Introduce an error at desired bit by taking XOR of num with y
num = num^y;
}
return num;
}

int main ()
{
unsigned int n;
printf("Enter an integer value: ");
scanf("%u", &n);
unsigned int ans = findError(n);
printf("%u\n",ans);
return 0;
}

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