Precedence of Arithmetic Operators

The precedence of arithmetic operators determines the order in which operators are evaluated in an expression.

Here is the order of precedence for arithmetic operators:

Operator Description Precedence Associativity
* Multiplication High Left to Right
/ Division High Left to Right
% Modulus High Left to Right
+ Addition Low Left to Right
- Subtraction Low Left to Right

Order of Evaluation

Example:1


#include <stdio.h>
int main() {
    int a = 5, b = 10, c = 15;
    int result = a + b * c; // Multiplication is evaluated before addition
    printf("Result: %d\n", result);
    return 0;
}

Output

Result: 155

Example:2


#include <stdio.h>
int main() {
    int result = (10 + 20) * (3 - 5) / 2;
    printf("Result = %d\n", result);
    return 0;
}

Output

Result = -30

Steps:

1.Add: 10 + 20 = 30
2.Subtract: 3 - 5 = -2
3.Multiply: 30 * -2 = -60
4.Divide: -60 / 2 = -30