Module 2-Control Statements Cheat Sheet

A Programming › C cheat sheet in English by lukenelson

Focus on control statements

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PRs

Basic Structure

#include <iostream> //Header file for input-output operations
using namespace std; //Allow using standard namespace
int main()
{
cout << "Hello,World!" << endl; //Prints output to console
return 0;
}

Selection Statements

Statement	Description	Syntax
If Statement	Executes a statement if a condition is true	`if (condition) {statement(s);}`
If-else Statement	Executes one block if the condition is true, another if false	`if (condition) {statement (s);}` `else{statement (s);}`
Ternary Operator	A shorthand for if-else	`variable = (condition) ?` `value if true : value if false;`
Switch Statement	Selects a case to execute based on a variable's value	`switch(expression)` `{case value: statement;` `break;` `default: statement;}`

Loop Control Statements

Statement	Description
break	Exits a loop or switch statement.
continue	Skips the rest of the loop iteration and continues to the next.
exit()	Terminates the program immediately.

IF_ELSE-SWITCH

WHILE LOOP

Input and Output

int num;
cout << "Enter a number: ";
cin >> num;
cout << "You entered: " << num << endl;

Repetition Statements (Loop)

Loop Type	Description	Syntax
while loop	Repeats a block of code while a condition is true.	`while (condition)` `{statement(s);}`
do-while loop	Executes at least once, then repeats while a condition is true.	`do {statement(s);}` `while (condition);`
for Loop	A compact loop with initialization, condition, and increment.	`for (int; condition; update)` `{ statement(s); }`

Types of Loop

Types	Description
Counter-Controlled Loop	Executes a set number of times.
Sentinel-Controlled Loop	Runs until a special value is entered.
Flag-Controlled Loop	Uses a bool flag to control execution.
Nested Loops	A loop inside another loop.

FOR-BREAK

CONTINUE-NESTED

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