COMPUTER SCIENCE

GİRDİĞİNİZ CÜMLEDE KAÇ TANE Mİ a VAR ?

#include <iostream>
#include <string>
using namespace std;
int main()
{
string c;
int sayac=0;
string s("a");
getline(cin,c);
int b=-1;
do{

b=c.find("a",b+1);
if(b!=string::npos)
sayac++;

}while(b!=string::npos);

cout<<"a="<<sayac<<endl;
}

VOİD VARSA RETURN YOK !

#include <iostream>
using namespace std;
void yildizyaz(int t){
if(t<0)
t=50;
for(int i=0;i<t;i++)
cout<<"*";
cout<<endl;
}
int main()
{
yildizyaz(-11111);
yildizyaz(50);
yildizyaz(25);

}

MATEMATİK FONKSİYONLARI (#include )

#include <iostream>
#include <cmath>
using namespace std;
int main()
{
int a,x;
cout<<"Cosinus hesabi yapmak icin 1 e "<<endl;
cout<<"Sinus hesabi yapmak icin 2 ye "<<endl;
cout<<"Logaritma hesabi yapmak icin 3 e "<<endl;
cout<<"Karekok hesabi yapmka icin 4 e "<<endl;
cout<<"Tanjant hesabi yapmak icin 5 e basiniz "<<endl;
cout<<"Hangi islem : ";
cin>>a;

if(a==1)
{cout<<"Hesabi yapacaginiz sayiyi giriniz : "<<endl;
cin>>x;
cout<<"Cos"<<x<<"="<<cos(x);}
else if(a==2)
{
cout<<"Hesabi yapacaginiz sayiyi giriniz : ";
cin>>x;
cout<<"Sin"<<"="<<x<<sin(x);
}
else if(a==3)
{cout<<"Hesabi yapacaginiz sayiyi giriniz : ";
cin>>x;
cout<<x<<" in Dogal logaritmasi : "<<log(x);}
else if(a==4)
{cout<<"Hesabi yapacaginiz sayiyi giriniz : ";
cin>>x;
cout<<"Karekok "<<x<<"="<<sqrt(x);}
else if(a==5)
{cout<<"Hesabi yapacaginiz sayiyi giriniz : ";
cin>>x;
cout<<"Tanjant"<<x<<"="<<tan(x);}
else
cout<<"HATALI RAKAM GIRDINIZ...";
}

GİRİLEN ÖĞRENCİ VE NOTLARINA GÖRE EN YÜKSEK VE EN DÜŞÜK ALAN ÖGRENCİYİ BULAN PROGRAM(100 ÜSTÜNDE ALANLAR HESABA GİRMEZ)

#include <iostream>
#include <string>
using namespace std;
int main()
{
int yn=0,c,dn=100;
string a; string iyi=" ",kotu=" ";
for(int i=1;i<5;i++)
{
cout<<"Isim : ";
cin>>a;
cout<<"Sinav notu : ";
cin>>c;
if(c<=100){
if(c>yn){
yn=c;
iyi=a;
}
else if(c<dn){
dn=c; kotu=a;
}
else
break;
}

}
cout<<"en yuksek notu : "<<iyi<<" aldi : "<<yn<<endl;
cout<<"en kucuk notu : "<<kotu<<" aldi : "<<dn;
}

GİRİLEN BİR CÜMLEDEKİ SESLİ HARFLERİN SAYISINI BULAN PROGRAM (STRİNG)

#include <iostream>
#include <string>
using namespace std;
int main()
{size_t saya=0,sayac=0,say=0,sa=0,s=0;
string c;
getline(cin,c);
for(int i=0;i<c.length();i++)
{if(c[i]=='a')
sayac++;
else if(c[i]=='e')
saya++;
else if(c[i]=='i')
say++;
else if(c[i]=='o')
sa++;
else if(c[i]=='u')
s++;

}
cout<<"a="<<sayac<<endl;
cout<<"e="<<saya<<endl;
cout<<"i="<<say<<endl;
cout<<"o="<<sa<<endl;
cout<<"u="<<s<<endl;
}

KAREKÖK HESABI (FONKSİYON)

#include <iostream>
#include <cmath>
using namespace std;
int main()
{
int sayi;
cout<<"Kok almak istediginiz sayiyi giriniz : ";
cin>>sayi;
cout<<"Girilen sayinin karekoku :"<<sqrt(sayi)<<" dir";

}

GİRİLEN SAYIDAN BAŞLAYARAK TERS DİK ÜÇGEN ÇİZEN PROGRAM (FOR DÖNGÜSÜ)

#include <iostream>
using namespace std;
int main()
{

int n;
cout<<"n : ";
cin>>n;
for(int i=n; i>=1; i--)
{
for(int j=1; j<=i; j++)
{
cout<<j<<" ";
}
cout<<endl;
}
}

GİRİLEN SAYILARI YOKSAYMA SADECE STRİNG KARAKTERLERİNİ EKRANA YAZDIRAN C++ ÖRNEĞİ

#include <iostream>
#include <string>
using namespace std;
int main()
{
string a;
string r="0123456789";
getline(cin,a);
cout<<endl;
for(int i=0; i<a.length();i++)
{
for(int j=0; j<r.length();j++)
{
if(a[i]==r[j])
{
a.erase(i--,1);
break;

}
}
}
cout<<a<<endl;
}

STRİNG ÖRNEK C++

#include <iostream>
#include <string>
using namespace std;
int main()
{

string s;
getline(cin,s);

for(int i=0; i<s.length(); i++)
{
for(int j=0; j<i; j++)
{

cout<<"--->";
}
{
cout<<s[i]<<endl;
}
}
}

STRİNG ÖRNEK C++

#include <iostream>
#include <string>
using namespace std;
int main()
{

string s0("EN BUYUK");
string s1;
string s2("GokhAn naSiLsin afiYeTtesindiR insallah");
string s3(s2,0,1);
string s4(s2,4,1);
string s5(s2,11,1);
string s6(s2,4,1);
string s7(s2,21,1);
string s8(s2,4,1);
string s9(s2,9,1);
string s10(s2,4,1);
string s11(s2,29,1);
string s12(s2,4,1);
string s13(s2,19,1);
s1=s0+' '+s3+s4+s5+s6+s7+s8+s9+s10+s11+s12+s13;
cout<<s1;
string s21(s2,7,4);
cout<<s21;
}

STRİNG ÖRNEK C++

#include <iostream>
#include <string>
using namespace std;
int main()
{
int sayac=0;
string s;
cout<<"Kelime giriniz : ";
cin>>s;
for(int i=0;i<s.length();i++)
{
sayac++;
}

cout<<"Girdiginiz kelime "<<" "<<sayac<<" "<<"harflidir.";
}