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Last Online: 11-29-2020
Join Date: Apr 2006
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Re: C++ Help
Code:
1.23
#include<iostream>
using namespace std;
int main()
{
int x,y;
cout<<"enter your first integer:\n";
cin>>x;
cout<<endl<<"enter your second integer:\n";
cin>>y;
cout<<endl<<"the sum is: "<<x+y<<endl<<"the product is: "<<x*y<<endl<<"the difference is: "<<x-y<<endl<<"the quotion is: "<<x/y<<endl;
return 0;
}
1.24
#include<iostream>
using namespace std;
int main()
{
int x;
x=0;
if(x<=4)
cout<<x;
return 0;
}
1.25
#include<iostream>
using namespace std;
int main()
{
int x,y;
cout<<"enter your first integer; \n";
cin>>x;
cout<<endl<<"enter your second integer; \n";
cin>>y;
cout<<endl;
if(x>y)
cout<<x<<" is larger"<<endl;
else if(y>x)
cout<<y<<" is larger"<<endl;
else if(x==y)
cout<<"these number are equal "<<x<<" = "<<y<<endl;
return 0;
}
1.26
#include<iostream>
using namespace std;
int main()
{
int x,y,z,sum,ave,pro;
cout<<"Input three different integers: ";
cin>>x>>y>>z;
sum=x+y+z;
cout<<"sum is "<<sum<<endl;
ave=(x+y+z)/3;
cout<<"average is "<<ave<<endl;
pro=x*y*z;
cout<<"product is "<<pro<<endl;
return 0;
}
1.30
#include<iostream>
using namespace std;
int main()
{
int a,b,c,d,e;
cout<<"enter the 5 values:\n";
cin>>a>>b>>c>>d>>e;
if(a<b,a<c,a<d,a<e)
cout<<"the smallest "<<a<<endl;
else if(b<a,b<c,b<d,b<e)
cout<<"the samallest "<<b<<endl;
else if(c<a,c<b,c<d,c<e)
cout<<"the smallest "<<c<<endl;
else if(d<a,d<b,d<c,d<e)
cout<<"the smallest "<<d<<endl;
else
cout<<"the smallest "<<e<<endl;
}
{
if(a>b,a>c,a>d,a>e)
cout<<"the largest "<<a<<endl;
else if(b>a,b>c,b>d,b>e)
cout<<"the largest "<<b<<endl;
else if(d>a,d>b,d>c,d>e)
cout<<"the largest "<<d<<endl;
else if(c>a,c>b,c>d,c>e)
cout<<"the largest "<<c<<endl;
else
cout<<"the largest "<<e<<endl;
return 0;
}
1.31
#include<iostream>
using namespace std;
int main()
{
int x,y;
cout<<"enter your integer: \n";
cin>>x;
if(x%2)
cout<<x<<" is even\n";
else
cout<<x<<" is odd\n";
cout<<"enter your integer \n";
cin>>y;
if(y%2)
cout<<y<<" is even\n";
else
cout<<x<<" is odd\n";
return 0;
}
1.32:
x 1.32:
#include <iostream>
using namespace std;
int main()
{
int x,y;
cout<<"Enter two integers\n";
cin>>x>>y;
if (x%y==0)
cout<<x<<"is multiple of"<<y;
return 0;
}
<!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:1; mso-generic-font-family:roman; mso-font-format:other; mso-font-pitch:variable; mso-font-signature:0 0 0 0 0 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-unhide:no; mso-style-qformat:yes; mso-style-parent:""; margin:0in; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman","serif"; mso-fareast-font-family:"Times New Roman"; mso-bidi-language:AR-LB;} .MsoChpDefault {mso-style-type:export-only; mso-default-props:yes; font-size:10.0pt; mso-ansi-font-size:10.0pt; mso-bidi-font-size:10.0pt;} @page Section1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in; mso-header-margin:.5in; mso-footer-margin:.5in; mso-paper-source:0;} div.Section1 {page:Section1;} --> #include<iostream> //chapter 2 ex2.16
using namespace std;
int main()
{
double galon,mil,total,m,ave;
m=0;
total=0;
cout<<"enter the gallons used, -1 to end: \n";
cin>>galon;
while(galon!=-1)
{
total=total+galon;
cout<<"enter miles driven: \n";
cin>>mil;
m=m+mil;
cout<<"the miles/gallons for this tank was "<<mil/galon; //average for one entry
cout<<endl<<"enter the gallons used, -1 to end: \n";
cin>>galon;
}
ave=(m/total);
cout<<"the overall average is: "<<ave<<endl; //the overall average.
return 0;
}
Ex:2.17:
#include<iostream>
#include<iomanip>
using namespace std;
int main()
{
int an;
double bb,tc,cr,cl,b;
cout<<"Enter the account number: (-1 to end)"<<endl;
cin>>an;
while(an!=-1)
{
cout<<"Enter the beginning balance: "<<endl;
cin>>bb;
cout<<endl<<"Enter total charges:"<<endl;
cin>>tc;
cout<<endl<<"Enter total credits: "<<endl;
cin>>cr;
cout<<endl<<"Enter credit limit: "<<endl;
cin>>cl;
cout<<endl;
b=bb+tc-cr;
if(b>=cl)
{
cout<<"Account"<<setw(8)<<an<<endl;
cout<<"credit limit"<<setw(4)<<cl<<endl;
cout<<"Balance"<<setw(8)<<b<<endl;
cout<<"Credit limit exceeded"<<endl;
}
cout<<endl<<endl;
cout<<"enter the account number: (-1 to end)"<<endl;
cin>>an;
}
return 0;
}
Ex:2.18:
#include<iostream>//exercise2.18 page 160
using namespace std;
int main()
{
int ws;
double sales,total,commission;
ws=200;
cout<<"enter sales in dollars (-1 to end):"<<endl;
cin>>sales;
while(sales!=-1)
{
commission=(9*sales)/100;
total=ws+commission;
cout<<"salary is: $"<<total<<endl<<endl;
cout<<"enter sales in dollars (-1 to end):"<<endl;
cin>>sales;
}
return 0;
}
Ex:2.19:
#include<iostream>
using namespace std;
int main()
{
int hours,ratelow,extra;
double ratehigh,bonus;;
cout<<"enter hours worked (-1 to end)\n";
cin>>hours;
while(hours!=-1)
{
cout<<"enter hourly rate of the worker($00.00): "<<endl;
cin>>ratelow;
ratehigh=ratelow*1.5;
if(hours>40)
{
extra=hours-40;
bonus=extra*ratehigh;
cout<<"the salary is:$"<<bonus+40*ratelow<<endl;
}
else
cout<<"the salary is:$"<<hours*ratelow<<endl<<endl;
cout<<"enter hours worked (-1 to end)"<<endl;
cin>>hours;
}
return 0;
}
Ex:2.20:
#include<iostream>
using namespace std;
int main()
{
int counter=0,number=0,large=0;
cout<<"enter number of sold objects\n";
cin>>number;
while(counter<=10)
{
counter=counter+1;
if(number>=large)large=number;
cout<<"enter the number of sold objects\n";
cin>>number;
}
cout<<"the most sold is "<<large;
return 0;
}
Ex:2.21:
#include<iostream>
using namespace std;
int main()
{
int x;
x=1;
cout<<"N\t10*N\t100*N\t1000*N\n\n";
while(x<=5)
{
cout<<x<<"\t"<<x*10<<"\t"<<x*100<<"\t"<<x*1000<<endl;x++;
}
return 0;
}
problem 1:
#include <iostream>
using namespace std;
void prime(int,int);
int main()
{
int a,b;
cout<<"enter the domain between 2 numbers u need to find the prime numbers:"<<endl;
cin>>a>>b;
prime(a,b);
return 0;
}
void prime(int a,int b)
{
int i;
int num=0;
for (int j=a;j<=b;j++)
{
num=num+1;
for (i=2; i<num; i++)
{
if((num%i)==0)
{
break;
}
}
if (i >= num)
{
cout<<num<<endl;
}
}
}
problem 2
#include <iostream>
#include <cmath>
using namespace std;
int main()
{
const int maxNumb = 10000;
int sum, largestFactor, divisor;
double started, ended;
for (int lcv = 2; lcv < maxNumb; ++lcv)
{
sum = 1;
largestFactor = (int)sqrt((double)lcv);
for (divisor = 2; divisor <= largestFactor; ++divisor)
{
if (lcv % divisor == 0)
{
sum += divisor;
if (divisor * divisor != lcv)
sum += (lcv / divisor);
}
if (sum > lcv) break;
}
if (sum == lcv) cout << lcv << endl;
}
return 0;
}
problem 4
#include<iostream>
#include<cstdlib>
using namespace std;
int main()
{
int x,y,z,a;
while(a!=-1)
{
x=(1+rand() %9);
y=(1+rand() %9);
z=x*y;
cout<<"how much is "<<x<<" times "<<y<<" ?"<<endl;
cin>>a;
while (a!=z)
{
cout<<endl<<"No, plz try again"<<endl;
cin>>a;
}
cout<<"very good"<<endl;
cout<<"enter -1 to exit or any number to continue";
cin>>a;
}
return 0;
}
problem 5
#include<iostream>
#include<cstdlib>
using namespace std;
int main()
{
int x,y; char c;
cout<<"want to play (y or n)"<<endl;
cin>>c;
while(c==y)
{
x=(1+rand()%1000);
cout<<"i have a number between 1 and 1000."<<endl;
cout<<"can you guess my number?"<<endl;
cout<<"please type ur first guess"<<endl;
cin>>y;
while(y!=x)
{
if(y<=(x-10))
cout<<"Too low. Try again."<<endl;
else if(y<x)
cout<<"almost there."<<endl;
else if(y>=(x+10))
cout<<"too high. Try again."<<endl;
else if(y>10)
cout<<"almost there."<<endl;
cin>>y;
}
cout<<"excellent! you guessed the number!"<<endl;
cout<<"would you like to play again (y or n)?";
cin>>c;
}
return 0;
}
problem 6
#include<iostream>
#include<iomanip>
#include<cstdlib>
using namespace std;
int main()
{
int tim1=0,tim2=0,tim3=0,tim4=0,tim5=0,tim6=0,face;
for(int roll=1;roll<=6000;roll++)
{
face=1+rand()%6;
switch (face)
{
case 1:
++tim1;
break;
case 2:
++tim2;
break;
case 3:
++tim3;
break;
case 4:
++tim4;
break;
case 5:
++tim5;
break;
case 6:
++tim6;
break;
default :
cout<<"program should never get here!";
}
}
cout<<"Face"<<setw(15)<<"Times"
<<"\n 1"<<setw(15)<<tim1
<<"\n 2"<<setw(15)<<tim2
<<"\n 3"<<setw(15)<<tim3
<<"\n 4"<<setw(15)<<tim4
<<"\n 5"<<setw(15)<<tim5
<<"\n 6"<<setw(15)<<tim6<<endl;
return 0;
}
problem 11
#include<iostream>
using namespace std;
void draw_ESquare(int,char);
int main ()
{
int l;char c;
cout<<"enter the character the lenght of your square: \n";
cin>>c>>l;
cout<<endl;
draw_ESquare(l,c);
return 0;
}
void draw_ESquare(int l, char c)
{
for(int i=1;i<=l;i++)
{
for(int j=1;j<=l;j++)
if(i==1||j==l)
cout<<c;
else cout<<" ";
cout<<endl;
}
}
sorry i dont have the questions but if u read each example u will know what it do
these are the exercises that i found
i still have two e-books
c++ ill post them later by tonight
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