https://github.com/tanmayvaij/cpp-syntax
Overview of the syntax of C++ language
https://github.com/tanmayvaij/cpp-syntax
c-plus-plus cpp cpp17 syntax
Last synced: 9 months ago
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Overview of the syntax of C++ language
- Host: GitHub
- URL: https://github.com/tanmayvaij/cpp-syntax
- Owner: tanmayvaij
- Created: 2022-09-22T10:24:04.000Z (almost 4 years ago)
- Default Branch: main
- Last Pushed: 2022-09-25T17:05:25.000Z (almost 4 years ago)
- Last Synced: 2025-01-21T21:47:43.585Z (over 1 year ago)
- Topics: c-plus-plus, cpp, cpp17, syntax
- Language: C++
- Homepage:
- Size: 11.7 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: readme.md
Awesome Lists containing this project
README
# C++ Synax
### 1. Hello World
```cpp
#include
using namespace std;
int main () {
cout << "Hello World";
return 0;
}
```
### 2. Data Types
// Sample script - script_02.cpp
| Data Type | Size |
|-----------|------|
| int | 4 bytes |
| float | 4 bytes |
| char | 1 byte |
| bool | 1 byte |
| short int | 2 bytes |
| long int | 8 bytes |
| long long int | 8 bytes |
| double | 8 bytes |
| long double | 16 bytes |
### 3. Taking user Input
```cpp
// script_03.cpp
#include
using namespace std;
int main () {
int n;
cin >> n;
cout << "Entered number is:- " << n << endl;
return 0;
}
```
### 4. Conditional Statements
```cpp
// Sample script - script_04.cpp
if (/*condition*/) {
// code
}
else if (/*condition*/) {
// code
}
else {
// code
}
// Ternary Operator
/* Condition */ ? : /* Expression 1 */ : /* Expression 2 */;
```
### 5. Loops
```cpp
// Sample script - script_05.cpp
// 1. for loop
for ( /* Initialize */; /*Condition*/ ; /* Counter */ ) {
// code
}
// 2. while loop
while ( /*condition*/ ) {
// code
}
// 3. do while loop
do {
// code
}
while ( /*condition*/ );
```
### 6. Break and Continue
```cpp
// Sample script - script_06.cpp
#include
using namespace std;
int main () {
for ( int i = 0; i < 10; i++ ) {
if ( i == 2 ) {
continue;
}
else if ( i == 6 ) {
break;
}
else {
cout << i << endl;
}
}
return 0;
}
/*
Output:-
0
1
3
4
5
*/
```
### 7. Switch - Case
```cpp
// Sample script - script_07.cpp
switch ( /* expression */ ) {
case /*value*/:
// code
break;
/*
cases
*/
default:
// code
break;
}
```
### 8. Operators in C++
> Assignment Operators
| Operator | Description |
| -------- | ----------- |
| + | Adds two operands |
| - | Subtracts second operand from the first |
| * | Multiplies both operands |
| / | Divides numerator by de-numerator |
| % | Modulus Operator and remainder of after an integer division |
| ++ | Increment operator, increases integer value by one |
| -- | Decrement operator, decreases integer value by one |
> Relational Operators
| Operator | Description |
| -------- | ----------- |
| == | Checks if the values of two operands are equal or not, if yes then condition becomes true. |
| != | Checks if the values of two operands are equal or not, if values are not equal then condition becomes true. |
| > | Checks if the value of left operand is greater than the value of right operand, if yes then condition becomes true. |
| < | Checks if the value of left operand is less than the value of right operand, if yes then condition becomes true. |
| >= | Checks if the value of left operand is greater than or equal to the value of right operand, if yes then condition becomes true |
| <= | Checks if the value of left operand is less than or equal to the value of right operand, if yes then condition becomes true. |
> Logical Operators
| Operator | Description |
| -------- | ----------- |
| && | Called Logical AND operator. If both the operands are non-zero, then condition becomes true. |
| || | Called Logical OR Operator. If any of the two operands is non-zero, then condition becomes true. |
| ! | Called Logical NOT Operator. Use to reverses the logical state of its operand. If a condition is true, then Logical NOT operator will make false. |
> Bitwise Operators
| Operator | Description |
| -------- | ----------- |
| & | Binary AND Operator copies a bit to the result if it exists in both operands. |
| | | Binary OR Operator copies a bit if it exists in either operand. |
| ^ | Binary XOR Operator copies the bit if it is set in one operand but not both. |
| ~ | Binary Ones Complement Operator is unary and has the effect of 'flipping' bits. |
| << | Binary Left Shift Operator. The left operands value is moved left by the number of bits specified by the right operand. |
| >> | Binary Right Shift Operator. The left operands value is moved right by the number of bits specified by the right operand. |
> Assignment Operators
| Operator | Description |
| -------- | ----------- |
| = | Simple assignment operator, Assigns values from right side operands to left side operand. |
| += | Add AND assignment operator, It adds right operand to the left operand and assign the result to left operand. |
| -= | Subtract AND assignment operator, It subtracts right operand from the left operand and assign the result to left operand. |
| *= | Multiply AND assignment operator, It multiplies right operand with the left operand and assign the result to left operand. |
| /= | Divide AND assignment operator, It divides left operand with the right operand and assign the result to left operand. |
| %= | Modulus AND assignment operator, It takes modulus using two operands and assign the result to left operand. |
| <<= | Left shift AND assignment operator. |
| >>= | Right shift AND assignment operator. |
| &= | Bitwise AND assignment operator. |
| ^= | Bitwise exclusive OR and assignment operator. |
| |= | Bitwise inclusive OR and assignment operator. |
### 9. Comments in C++
```cpp
// Single Line Comment
/*
This is a
multiline comment
*/
```
### 10. Functions
```cpp
// Sample script:- script_08.cpp
returnType functionName(parameter1, parameter2, ...) {
// function body
}
```