What are the special symbols in C language?

In C programming language, special symbols have specific meanings and are essential for writing syntactically correct programs. This language provides low-level access to memory and is known for its performance and efficiency.

The C language includes a character set of English alphabets (a-z, A-Z), digits (0-9), and special characters with specific meanings. Some special characters are operators, while combinations like "
" are escape sequences. In C, symbols are used to perform special operations −

Syntax

[] () {} , ; * = # : . -> + - / % < > ! & | ^ ~ ? " ' \

Common Special Symbols in C Programming

Let's understand their definitions and usage −

• Brackets [] − Used for array element reference, indicating single and multidimensional subscripts.

• Parentheses () − Used for function calls and function parameters.

• Braces {} − Indicate the start and end of a code block containing multiple executable statements.

• Comma (,) − Used to separate multiple statements, parameters in function calls, and variable declarations.

• Semicolon (;) − Statement terminator that indicates the end of one logical entity. Each statement must end with a semicolon.

• Asterisk (*) − Used for pointer declaration, dereferencing, and multiplication operator.

• Assignment operator (=) − Used for assigning values to variables.

• Preprocessor (#) − Used by the compiler to transform your program before compilation starts (macros, includes).

• Arrow operator (->) − Used to access members of a structure through a pointer.

Example: Structure and Pointer Usage

This program demonstrates special characters like braces {}, parentheses (), and the arrow operator -> −

#include <stdio.h>

struct Point {
    int x, y;
};

void printPoint(struct Point *p) {
    printf("Point: (%d, %d)<br>", p->x, p->y);
}

int main() {
    struct Point p = {10, 20};
    printPoint(&p);
    return 0;
}

Point: (10, 20)

Complete List of Special Symbols

The table below shows special symbols and their meanings in C programming −

Example: Arithmetic Operations

This program demonstrates various arithmetic operators and special symbols −

#include <stdio.h>

int main() {
    int x = 10, y = 15;
    int sum, diff, prod, quot, rem;
    
    sum = x + y;      /* Addition */
    diff = x - y;     /* Subtraction */
    prod = x * y;     /* Multiplication */
    quot = y / x;     /* Division */
    rem = y % x;      /* Modulo */
    
    printf("Sum: %d<br>", sum);
    printf("Difference: %d<br>", diff);
    printf("Product: %d<br>", prod);
    printf("Quotient: %d<br>", quot);
    printf("Remainder: %d<br>", rem);
    
    return 0;
}

Sum: 25
Difference: -5
Product: 150
Quotient: 1
Remainder: 5

Conclusion

Special symbols in C are fundamental building blocks that define program structure, operations, and data manipulation. Understanding their proper usage is essential for writing efficient and syntactically correct C programs.