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#include <iostream>
#include <iomanip>
#include <cstring>
#include<stdarg.h>
#include<string.h>
using namespace std;
int main()
{
char str1[] = "abc def ghi jkw";
char str2[] = "qwe asd zxc bnm";
char str3[] = "afd qwe tyz opq";
cout << "PLease enter two substring"; /* str90 & str 91 are substring that use to find the substring in main string */
/* */
char str90[30]; /* */
cin.get(str90, 30); /* */
char str91[30]; /* */
cin.get(str91, 30); /* */
if (strstr(str1, str90) && strstr(str1, str91))
//to replace
{
cout << "Please enter the first string that you want to replace.";
char str101[30]; // str101 is the substring tht we want to replace //
cin.get(str101, 30); // str101 &str202 should be the first 2substring in the string //
cout << "Please enter the second string tht u want to replace.";
char str201[30];
cin.get(str201, 30);
string str = str1;
str.replace(str.begin() +8 , str.end() - 8, 10, str101);
str.replace(str.begin() + 12, str.end() - 4, 10, str201);
}
if (strstr(str2, str90) && strstr(str2, str91))
//to replace
{
cout << "Please enter the first string that you want to replace.";
char str102[30]; // str102 is the substring tht we want to replace //
cin.get(str102, 30); // str102 &str203 should be the first 2substring in the string //
cout << "Please enter the second string tht u want to replace.";
char str202[30];
cin.get(str202, 30);
string str = str2;
str.replace(str.begin() + 8, str.end() - 8, 10, str102);
str.replace(str.begin() + 12, str.end() - 4, 10, str202);
}
if (strstr(str3, str90) && strstr(str3, str91))
//to replace
{
cout << "Please enter the first string that you want to replace.";
char str103[30]; // str103 is the substring tht we want to replace //
cin.get(str103, 30); // str103 &str203 should be the first 2substring in the string //
cout << "Please enter the second string tht u want to replace.";
char str203[30];
cin.get(str203, 30);
string str = str3;
str.replace(str.begin() + 8, str.end() - 8, 10, str103);
str.replace(str.begin() + 12, str.end() - 4, 10, str203);
}
// for example if we keyin 'abc' and 'def', str1 is to be edited.
// Thus, we enter 2 substring for example: 'erf' and 'wer'.
// Then str1 will be edited and become "abc def erf wer".
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