For Loop in C++ || Hackerrank Solution

 

For Loop

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Objective:

A for loop is a programming language statement which allows code to be repeatedly executed.

The syntax is

for ( <expression_1> ; <expression_2> ; <expression_3> )
<statement>
expression_1 is used for intializing variables which are generally used for controlling the terminating flag for the loop.
expression_2 is used to check for the terminating condition. If this evaluates to false, then the loop is terminated.
expression_3 is generally used to update the flags/variables.
A sample loop is

for(int i = 0; i < 10; i++) {
...
}
In this challenge, you will use a for loop to increment a variable through a range.

Input Format

You will be given two positive integers,a and b (a<=b), separated by a newline.

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Solution:

#include <iostream> #include <cstdio> using namespace std; int main() { int a,b,c; cin >> a>>b; for(c=a;c<=b;c++){ switch(c){ case 1: cout <<"one"<<endl; break; case 2: cout <<"two"<<endl; break; case 3: cout <<"three"<<endl; break; case 4: cout << "four"<<endl; break; case 5: cout << "five"<<endl; break; case 6: cout << "six"<<endl; break; case 7: cout << "seven"<<endl; break; case 8: cout << "eight"<<endl; break; case 9: cout <<"nine"<<endl; break; default:{ if(c%2==0){ cout<<"even"<<endl; } else{ cout<<"odd"<<endl; } } } } return 0; }

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Note:

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