C++ Program for Search And Replace in A String

 #include<iostream>

#include<iomanip>

#include<string.h>

using namespace std;

void line()

{

cout<<"========================================\n";

}

void stringprogram()

{

int i,n,len=0,g=0;

char arr[20],ch,ch1=0;

line();

cout<<"String Programs #18\n";

line();

cout<<"Enter Any values to the String :";

cin.getline(arr,20);

line();

for(n=0;arr[n]!='\0';n++);

cout<<"Enter Whatever you want to search :";

cin>>ch;

cout<<"Enter Whatever you want to replace :";

cin>>ch1;

for(i=0;i<n;i++)

    {

    if(arr[i]==ch)

    {

arr[i]=ch1;

len++;

}

    }

    if(len==0)

    cout<<"number not found...";

cout<<arr<<"  ";

}

int main()

{

stringprogram();

}