Declare loop control variable inside the for : for loop « Operators statements « C++ Tutorial

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C++ Tutorial » Operators statements » for loop

3.15.9.Declare loop control variable inside the for

#include <iostream> 

using namespace std; 

  

int main() { 

  int sum = 0; 

  int fact = 1; 

 

  for(int i = 1; i <= 5; i++) {  

    sum += i;  // i is known throughout the loop 

    fact *= i; 

  } 

 

  // but, i is not known here. 

 

  cout << "Sum is " << sum << "\n"; 

  cout << "Factorial is " << fact; 

 

  return 0; 

}

Sum is 15
Factorial is 120"

3.15.for loop
	3.15.1.	Simplest for loop statement
	3.15.2.	A conversion table of feet to meters
	3.15.3.	Use multiple statements in for loops
	3.15.4.	Display the alphabet: use char to control for loop
	3.15.5.	A negatively running for loop
	3.15.6.	Loop until a random number that is greater than 20,000.
	3.15.7.	A for loop with no increment
	3.15.8.	The body of a for loop can be empty
	3.15.9.	Declare loop control variable inside the for
	3.15.10.	Use nested for loops to find factors of numbers between 2 and 100
	3.15.11.	For loops with null statements
	3.15.12.	empty for loop statement
	3.15.13.	Compound interest calculations with for
	3.15.14.	Floating point control in a for loop
	3.15.15.	Generating multiplication tables

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