Substring Replacement

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main()

{

char str[50],str1[15],str2[15],temp[50];

char *ptr;

int cnt;

clrscr();

printf(“enter a line of text..... \n”);

gets(str);

printf(“enter the string to be replaced... \n”);

gets(str1);

printf(“enter the replacing string...”);

gets(str2);

printf(“\n the replaced line of the text....”);

while(1)

{

ptr=strstr(str,str1);

if(ptr==?\o?)

break;

cnt=ptr-str;

strncpy(temp,str,cnt);

temp[cnt]=?10?;

strcat(temp,str+cnt+strlen(srt1));

strcpy(str1,temp);

puts(str);

}

getch();

}

Output:

enter the line of text... i love india

enter the string to be replaced..india

enter the replacing string...my parents

the replaced line of text

i love my parents