Satrlar bilan ishlash; String turi bilan ishlash; String Obyekt sifatida

Satr qismini almashtirish funksiyasi

Bir satr qismining o‘rniga boshqa satr qismini qo‘yish uchun quyidagi funksiyalardan foydalanish mumkin:

replace(unsigned int pos1,unsigned int n1,

const string & str);

replace(unsigned int pos1,unsigned int n1,

const string & str,unsigned int pos2,

unsigned int n2);

replace(unsigned int pos1,unsigned int n1,

const char *str, int n);

Bu funksiyalar insert kabi ishlaydi, undan farqli ravishda amal chaqiruvchi satrning ko‘rsatilgan o‘rnidan (pos1) n1 belgilar o‘rniga str satrini yoki uning pos2 o‘rindan boshlangan n2 belgidan iborat qismini qo‘yadi (almashtiradi).

Misol:

char * sc=”0123456789”;

unsigned int i=3,j=2;

string s1,s,s2;

s2=sc; s1=”misollar”; s=”xyz”; // s2=”0123456789”

s2.replace(i,j,“abcdef”); // s2=”012abcdef56789”

s1.replace(i-1,j+1,s2,4,5); // s1=”mi45678lar”

s.replace(i-2,j+2,sc,5); // s=”x012345”

swap(string & str) funksiyasi ikkita satrlarni o‘zaro almashti­rish uchun ishlatiladi. Masalan:

string s1,s2;

s1=”01234”;

s2=”98765432”;

s1.swap(s2); // s2=”01234” va s1=”98765432” bo‘ladi.