Program to Replace substring in a string

06 May 2024

Description about Program to Replace substring in a string

Get a string as input from the user and then get another string which has to be removed from the string. Get the third input, the new substring which is placed in that substring position. Finally print the output by replacing the substring with new string.

Input

Enter a string

talentbattle

Enter the substring to be removed:

talent

Enter the new substring:

student

Output

The new string:

studentbattle

C Program to Replace substring in a string

#include <stdio.h>

#include <string.h>

void replace(char str[],char sub[],char nstr[])

{

int strLen,subLen,nstrLen;

int i=0,j,k;

int flag=0,start,end;

strLen=strlen(str);

subLen=strlen(sub);

nstrLen=strlen(nstr);

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

{

flag=0;

start=i;

for(j=0;str[i]==sub[j];j++,i++)

if(j==subLen-1)

flag=1;

end=i;

if(flag==0)

i-=j;

else

{

for(j=start;j<end;j++)

{

for(k=start;k<strLen;k++)

str[k]=str[k+1];

strLen--;

i--;

}

for(j=start;j<start+nstrLen;j++)

{

for(k=strLen;k>=j;k--)

str[k+1]=str[k];

str[j]=nstr[j-start];

strLen++;

i++;

}

int main()

{

char str[20],sub[20],nstr[50];

printf("Enter a string: ");

scanf("%s",str);

printf("Enter the substring to be removed: ");

scanf("%s",sub);

printf("Enter the new substring: ");

scanf("%s",nstr);

replace(str,sub,nstr);

printf("The new string: %s",str);

return 0;

}

C++ Program to Replace substring in a string

#include <iostream>

#include <string.h>

using namespace std;

void replace(char str[],char sub[],char nstr[])

{

int strLen,subLen,nstrLen;

int i=0,j,k;

int flag=0,start,end;

strLen=strlen(str);

subLen=strlen(sub);

nstrLen=strlen(nstr);

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

{

flag=0;

start=i;

for(j=0;str[i]==sub[j];j++,i++)

if(j==subLen-1)

flag=1;

end=i;

if(flag==0)

i-=j;

else

{

for(j=start;j<end;j++)

{

for(k=start;k<strLen;k++)

str[k]=str[k+1];

strLen--;

i--;

}

for(j=start;j<start+nstrLen;j++)

{

for(k=strLen;k>=j;k--)

str[k+1]=str[k];

str[j]=nstr[j-start];

strLen++;

i++;

}

int main()

{

char str[20],sub[20],nstr[50];

cout<<"Enter a string: ";

cin>>str;

cout<<"Enter the substring to be removed: ";

cin>>sub;

cout<<"Enter the new substring: ";

cin>>nstr;

replace(str,sub,nstr);

cout<<"The new string: "<<str<<endl;

return 0;

}

Java Program to Replace substring in a string

import java.util.Scanner;

public class Main

{

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

System.out.print("Enter a string: ");

String str = sc.nextLine();

System.out.print("Enter the string to be removed: ");

String sub = sc.nextLine();

System.out.print("Enter the new string: ");

String newstr =sc.nextLine();

String repstr = str.replace(sub, newstr);

System.out.println("New String is :"+repstr);

}

Python Program to Replace substring in a string

Str=input("Enter a string: ")

sub=input("Enter string to be removed: ")

nstr=input("Enter ne string: ")

Str=Str.replace(sub,nstr)

print("New string: ")

print(Str)

Program to Replace substring in a string

Description about Program to Replace substring in a string

C Program to Replace substring in a string

C++ Program to Replace substring in a string

Java Program to Replace substring in a string

Python Program to Replace substring in a string

FAQ

Any Questions?
Look Here.

Program to Replace substring in a string

Description about Program to Replace substring in a string

C Program to Replace substring in a string

C++ Program to Replace substring in a string

Java Program to Replace substring in a string

Python Program to Replace substring in a string

FAQ

Any Questions? Look Here.

Related Articles

Any Questions?
Look Here.