C++ Part 24

Working with String - File - While Loop

//NavidPlus.blogspot.com #include <iostream> #include <fstream> #include <string> using namespace std; int main( ) {    string text;   fstream inputStream;    inputStream.open("Website");    while (inputStream >> text) { cout << text << endl; }    inputStream.close();    return 0; } // This Program will read all the input while the condition still true.

Input File : Webiste NavidPlus https://NavidPlus.blogspot.com NavidPlus@Blogger Navid Plus is a Tech blog which is focusing on a Science material that I'll be learned every day through my College and job. Most likely blog's posts contain Programming, Security, Networking, Math, and photography. It is a FUN blog. C Plus Plus @ NavidPlus INTRO Intro to C++ Part 1 Intro to C++ Part 2 Intro to C++ Part 3 Intro to C++ Part 4 Intro to C++ Part 5 Intro to C++ Part 6 Intro to C++ Part 7 Intro to C++ Part 8 _________________________________ C++ By NavidPlus.BlogSpot.Com

If you run this Program, you will find the problem !?

C++ Part 22

While loop Example:

#include <iostream> using namespace std; int main( ) {    int numberOfItems, count,        caloriesForItem, totalCalories;    cout << "How many items did you eat today? ";    cin >> numberOfItems;    totalCalories = 0;    count = 1;    cout << "Enter the number of calories in each of the\n"         << numberOfItems << " items eaten:\n";    while (count++ <= numberOfItems)    {        cin >> caloriesForItem;        totalCalories = totalCalories + caloriesForItem;    }    cout << "Total calories eaten today = "         << totalCalories << endl;    return 0; }

C++ Part 21

While and do-while Statements
A while STATEMENT WITH A SINGLE-STATEMENT BODY

while (Boolean_Expression) Statement A while STATEMENT WITH A MULTISTATEMENT BODY while (Boolean_Expression) { Statement_1 Statement_2 . . . Statement_Last } A do-while STATEMENT WITH A SINGLE-STATEMENT BODY do Statement while (Boolean_Expression); A do-while STATEMENT WITH A MULTISTATEMENT BODY do { Statement_1 Statement_2 . . . Statement_Last } while (Boolean_Expression); Do not forget the final semicolon.

C++ Part 15

Iteration

while: execute a statement as long as some condition is true

do while: similar to while but check condition after executing the statement.

for: execute a statement on every element of some data, or some fixed number of times.

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while {loop body}

int count = 0 ;
while ( count < 3) { cout << ” Hello ” << count << endl ; count ++; }

Output :

Hello Hello Hello