Sure, let’s dive into the topic of “*=” operator in the C programming language.

C is an incredibly powerful and flexible high-level language that offers programmers immense control over the components of a computer. A significant part of C’s strength comes from its extensive variety of operators. One such operator is the “*=” operator, also referred to as the multiplication assignment operator.

int x = 10; x *= 5; // This is equivalent to x = x * 5;

In the provided code, we’re assigning the value of 10 into variable ‘x’. Afterward, we use the “*=” operator to multiply ‘x’ with 5 and then reassign the result to ‘x’. So the new value of ‘x’ will be 50.

## Understanding the “*=” Operator

The “*=” operator is a type of **compound assignment** operator, which is used to modify the value of the variable itself. The multiplication assignment operator multiplies the value of the variable by the right operand and then assigns the result back to the variable.

int y = 7; y *= 3; // This is equivalent to y = y * 3;

Here, the variable ‘y’ initially holds the value of 7. After applying the “*=” operator, ‘y’ is multiplied by 3 and the result (21) is assigned back to ‘y’.

## Practical Usage of “*=” Operator

The multiplication assignment operator can be very useful in many programming scenarios. One common use is when you need to repeatedly multiply a variable by a certain factor.

#include

int main(){

int factorial = 5;

int result = 1;

for(int i = 1; i <= factorial; i++){
result *= i; //This is equivalent to result = result * i;
}
printf("The factorial of %d is %d", factorial, result);
return 0;
}
[/code]
In this example, we are calculating the factorial of a number. The multiplication assignment operator simplifies the operation, increasing code readability and efficiency.
Remember, the "*=" operator is a great tool for increasing code efficiency and readability when doing repeated multiplication operations. However, like all tools in programming, it should be used with caution and understanding to avoid pitfalls or bugs in your code.