4. (Useful utility) Modify the program written for Exercise 3 to search for the first occurrence of a user-entered sequence of characters, and then replace this sequence, when it's found in the string, with a second user-entered sequence. For example, if the entered string is Figure 4-4 illustrates the output of Program 4-2 and the user enters that 4- is to be replaced by 3-, the resulting string is Figure 3-4 illustrates the output of Program 4-2. (Only the first occurrence of the searched-for sequence has been changed.) 5. (Useful utility) Modify the program written for Exercise 4 to replace all occurrences of the designated sequence of characters with the new sequence of characters. For example, if the entered string is Figure 4-4 illustrates the output of Program 4-2 and the user enters that 4- is to be replaced by 3-, the resulting string is Figure 3-4 illustrates the output of Program 3-2.

4. (Useful utility) Modify the program written for Exercise 3 to search for the first occurrence of a user-entered sequence of characters, and then replace this sequence, when it's found in the string, with a second user-entered sequence. For example, if the entered string is Figure 4-4 illustrates the output of Program 4-2 and the user enters that 4- is to be replaced by 3-, the resulting string is Figure 3-4 illustrates the output of Program 4-2. (Only the first occurrence of the searched-for sequence has been changed.) 5. (Useful utility) Modify the program written for Exercise 4 to replace all occurrences of the designated sequence of characters with the new sequence of characters. For example, if the entered string is Figure 4-4 illustrates the output of Program 4-2 and the user enters that 4- is to be replaced by 3-, the resulting string is Figure 3-4 illustrates the output of Program 3-2.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Modify program given to question 4 and 5.

4. (Useful utility) Modify the program written for Exercise 3 to search for the first occurrence
of a user-entered sequence of characters, and then replace this sequence, when it's found in
the string, with a second user-entered sequence. For example, if the entered string is
Figure 4-4 illustrates the output of Program 4-2 and the user enters that 4- is
to be replaced by 3-, the resulting string is Figure 3-4 illustrates the output of
Program 4-2. (Only the first occurrence of the searched-for sequence has been changed.)
5. (Useful utility) Modify the program written for Exercise 4 to replace all occurrences of the
designated sequence of characters with the new sequence of characters. For example, if the
entered string is Figure 4-4 illustrates the output of Program 4-2 and the user
enters that 4- is to be replaced by 3-, the resulting string is Figure 3-4 illustrates the
output of Program 3-2.

3:53 1
#include <iostream>
#include <string>
using namespace std;
int main()
{
char str[20];
//Step 1
//Input string from user
cout<<"Enter the string: ";
cin>>str;
//Step 2
// Start traversing the string str
for (int i=0; str[i] != '\0'; i++)
{
//Step 3
// If character is 'e'
if (str[i]=='e')
{
// Replace that character with 'x'
str[i] = 'x';
}
//Step 4
// Display the string
cout<<endl<<str;
return 0;
}
?

Process by which instructions are given to a computer, software program, or application using code.

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