C++ satrlar bilan ishlash funksiyalari
![s2.append(s3); // s2 = " rdvatami "
cout << s2 << endl;
system ("pause");
return 0;
}
char toifasidagi satrni string toifasiga o'tkazish. clear funksiyasiga misol.
#include <iostream.h>
#include <string>
int main()
{
char c[100];
string s = "Boshlang'ich qiymat";
s.clear(); // s ning qiymati tozalandi
cout << "Satr kiriting" << endl;
cin.getline(c, sizeof(c));
// s satriga char toifasidagi c satrini nusxasini olish
s.assign(c, strlen(c));
cout << s << endl;
system ("pause");
return 0;
}
string toifasidagi satrni char toifasiga o'tkazish
string toifasidagi satrni char toifasiga o'tkazish uchun c_str yoki data funksiyalaridan
foydalanish mumkin.
const char * c_str() const;
const char * data() const;
Bularning bir - biridan farqi, data funksiyasida satr oxiriga '\0' satr oxiri belgisi
qo'shilmaydi.
#include <iostream.h>
#include <string>
#include <string.h>
int main()
{
char c[100];
string s;
cout << "Satr kiriting" << endl;
getline(cin, s);
strcpy(c, s.c_str());
cout << c << endl;
system ("pause");
return 0;
}
Satrning biror qismini o’ chirish
erase(unsigned int pos=0, unsigned int n=npos);
erase funksiyasi satrni pos o'zgaruvchisida ko'rsatilgan o'rindan boshlab n ta belgini
o'chiradi.
Agar nechta belgi o'chirilishi n ko'rsatilmagan bo'lsa, pos o'zgaruvchisida ko'rsatilgan](https://docx.uz/documents/dec5b225-df0c-459b-ab0b-db9fd57fc83c/page_5.png?v=1)
![o'rindan boshlab satr oxirigacha o'chiriladi.
Agar pos va n ko'rsatilmagan bo'lsa, satr to'liq o'chiriladi.
#include <iostream.h>
#include <string>
int main()
{
string s = "Assalomu alaykum bo'lajak dasturchilar";
cout << s << endl;
// 16 - belgidan boshlab 9 ta belgini o'chirish
s.erase(16, 9);
cout << s << endl; // Assalomu alaykum dasturchilar - chiqadi
// s = "Assalomu alaykum dasturchilar";
// 16 - belgidan boshlab satr oxirigacha o'chirish
s.erase(16);
cout << s << endl; // Assalomu alaykum - chiqadi
s.erase();
cout << s << endl; // bo'sh satr chiqariladi
system ("pause");
return 0;
}
Satrni satr orasiga qo'shish
Biror satrga boshqa satrning istalgan qismini qo'shish uchun insert funksiyasidan
foydalaniladi.
insert(unsigned int pos1, const string &str); Satrga pos1 o'rindan boshlab, str satrini
qo'shish. insert(unsigned int pos1, const string &str, unsigned int pos2,unsigned int n);
Satrga pos1 o'rindan boshlab, str satrining pos2 o'rnidan boshlab n ta belgini qo'shish.
insert(unsigned int pos1, const char *str, int n);
Satrga pos1 o'rindan boshlab, char toifasidagi satrning n ta belgisini qo'shish.
#include <iostream.h>
#include <string>
int main()
{
string s = "Assalomu alaykum do'stlar";
string c = "Merhibon_va_muhtarama_ayollar";
char p[] = "Salomlashish odobi";
cout << s << endl;
// 17 - belgidan boshlab yangi satrni qo'shish
s.insert(17, "aziz_");
cout << s << endl; // Assalomu alaykum aziz do'stlar
// c satridan 8 - belgidan boshlab 10 ta belgi qo'shish
s.insert(21, c, 8, 10);
cout << s << endl; // Assalomu alaykum aziz_va_muhtar_do'stlar
// char toifasidagi satrdan 13 ta belgini qo'shish
s.insert(0, p, 13);
cout << s << endl;
system ("pause");
return 0;
}](https://docx.uz/documents/dec5b225-df0c-459b-ab0b-db9fd57fc83c/page_6.png?v=1)
C++ satrlar bilan ishlash funksiyalari