for loop in C++ programming language

for loop in C++ programming language

In this tutorial, we will discuss the for loop in C++ programming language

In the programming language, looping statements are used to repeat a particular block of code.

In the C++ programming language, “for statement” is used to repeat a block of code until the particular condition is satisfied.

 

In the programing language, Generally , loops are used to repeat a specific group of code until some condition is satisfied

 

There are three types of loops used in C++ language

• for loop
• while loop
• do-while loop

 

here, we are going to learn how to use the for loop in C++ language

 

The syntax of for loop

for(init-expression; condition-expression; update-expresion;)

{
    //statement(s);}

 

Flow diagram

How while loop works

• Firstly, the test expression evaluates the test expression only once
• When the test expression is true. statements inside the body of while loop is executed.
• this process happening on until the test expression is false
• When the test expression is false, The control exits from the loop body and while-loop is terminated

#include <iostream>

using namespace std;

int main()
{
int counter;
for(counter=1; counter<=10; counter++)
{
cout <<counter<< “—> Hello this is for loop” << endl;
}

return 0;
}

When the above code is compiled and executed, it produces the following result:

program 2

#include <iostream>

using namespace std;

int main()
{
for(int i=0; i<=2; i++)
{
cout<<i<<endl;
}
// Output: 0

int i;

for(i=0; i<=2; i++) {

cout<<i<<endl;

}

}

 

 

When the above code is compiled and executed, it produces the following result:

program 3

using namespace std;

int main()
{
int i;  //define a loop variable
for(i=0; i<=5; i++)  //starting value. condition 0 to 5. increment
{
cout << i <<” “; //print var i and space

//cout<<endl; //print new line

}

return 0;
}

When the above code is compiled and executed, it produces the following result:

program 4

This program used ton print – 5 number serious

using namespace std;

int main()
{
int i;  //define a loop variable
for(i=0; i<=5; i++) //starting value. condition 0 to 5. increment

{
cout << i <<” “; //print var i and space
cout<<endl; //print new line
}

return 0;
}

 

When the above code is compiled and executed, it produces the following result: