Question

Write a program that reads an unknown number (but no more than 100) of integer values from a file (“ass5_Q4_input.txt”), and displays distinct numbers. (i.e. if a number appears multiple times, it is displayed only once.)

Answer 1

#include <iostream>
#include <iomanip>
#include <fstream>
#include <cstdlib>
using namespace std;

int main() {
int a[100];//to store upto hundered numbers//with out duplicates
int x;
int i=0;
ifstream inFile;
  
inFile.open("C:/Users/Vamsi/Desktop/ass5_Q4_input.txt");//give proper path
if (!inFile) {
cout << "Unable to open file";
exit(1); // terminate with error
}
  
while (inFile >> x) {
int c=0;
for(int j=0;j<i;j++)
if(a[j]==x)c++;//checking for duplicates
if(c==0)//if no duplicate found
a[i++]=x;//then inserting
}
  
inFile.close();
cout << "Distinct numbers in file:\n";
for(int j=0;j<i;j++)
cout<<a[j]<<" ";
cout<<endl;
return 0;
}

sample output:

Distinct numbers in file:
1 2 3 4 5 6 7 8 9 435 0 123 25 325 356 35 234 235

Process exited normally.
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