Programming Exercise Looping Structure P-1

IF Statement Programming Exercise Part-1

What is IF Statement in C and C++ Programming

Program 1:
Write a program that inputs values into the individual elements of an array during program execution and displays the values of the array. No loop statement should be used in the program.

#include<iostream>
using namespace std;
main()
{
int temp[5];

cout<<"Enter value in 1st element of temp. ? ";
cin>>temp[0];
cout<<"Enter value in 2nd element of temp. ? ";
cin>>temp[1];
cout<<"Enter value in 3rd element of temp. ? ";
cin>>temp[2];
cout<<"Enter value in 4th element of temp. ? ";
cin>>temp[3];
cout<<"Enter value in 5th element of temp. ? ";
cin>>temp[4];
cout<<"Values in array temp are:"<<endl;
cout<<temp[0]<<endl;
cout<<temp[1]<<endl;
cout<<temp[2]<<endl;
cout<<temp[3]<<endl;
cout<<temp[4]<<endl;

}

Program 2:
Write a program that assigns values into the individual elements of an array and displays the values of the array.

#include<iostream>
using namespace std;
main()
{
int temp[5], i;
temp[0] = 2;
temp[1] = 20;
temp[2] = 15;
temp[3] = 254;
temp[4] = 5;

for(i = 0; i<=4; i++)
cout<<"Value in temp["<<i<<"] = "<<temp[i]<<endl;

}

Program 3:
Write a program that assigns value 50 to all the elements of an array “abc” and then displays these values on the screen.

#include<iostream>
using namespace std;
main()
{
int abc[15], i;


// Assign values to array “abc”
for(i = 0; i <= 14; i++)
abc[i] = 50;

// Display contents of array “abc”
for(i = 0; i<=14; i++)
cout << abc[i] << endl;

}

Program 4:
Write a program that gets 5 integer values into an array and then displays the values of the elements of array in reverse order.

#include<iostream>
using namespace std;
main()
{
int arr[5], i;

for(i=0; i<=4; i++) 
{
cout<<"Enter value in element "<<i<<" ? ";
cin>>arr[i];
} 
cout<<"Output in reverse order"<<endl;
for(i=4; i>=0; i--) 
{
cout<<arr[i]<<endl;
}

}

Program 5:
Write a program that inputs temperatures for seven days of the week into a one-dimensional array “temp”. It computes the average temperature and displays the values of array and calculated average temperature on the screen.

#include<iostream>
using namespace std;
main()
{
float temp[7], sum = 0;
int i=0;

while(i<=6)
{
cout<<"Enter temp. of day "<<i+1<<" ? ";
cin>>temp[i];
sum = sum + temp[i];
i++;
}
cout<<"\nAverage temperature : "<<sum/7.0;

}

Program 6:
Write a program that inputs values into one-dimensional array and finds out the total number of odd and even values entered into one-dimensional array.

#include<iostream>
using namespace std;
main()
{
int arr[10], i, odd, even;
i = odd = even = 0;

while(i<=9)
{
cout<<"Enter value into element "<<i<<"?";
cin>>arr[i];
(arr[i]%2==0)? even++ : odd++;
i++;
}
cout<<"\nEven Values : "<<even;
cout<<"\nOdd Values : "<<odd;

}

Program 7:
Develop a program that inputs ‘n’ values in a list and prints the product of the value and the position at which it resides in the list, i.e. product L(1)*1, product L(2)*2, and so on. For example:
// Position 1 2 3 4 5
// Value 5 3 7 1 4
// Output 5 6 21 4 20
// Note: The list does not change.

#include<iostream>
using namespace std;
main()
{
int arr[5], i;
i = 0;

while(i<=4)
{
cout<<"Enter value into element "<<i<<"?";
cin>>arr[i];
i++;
}
cout<<"\n products of the values and the positions: "<<endl;
for(i = 0; i<=4; i++)
cout<<arr[i]<<"*"<<i+1<<" = "<< arr[i]*(i+1)<<endl;

}

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