Description
HARD DO OTHER PROBLEM FIRST
This program implements a simple integer calculator.
The input is a valid arithmetic expression on a single line.
The expression contains integers (possibly negative), operators + - * /.
All tokens are separated by spaces. Example:
2 + 3 * 4 * -9
You must evaluate the expression while respecting ordinary arithmetic precedence:
* and / have higher precedence than + and -.
Only one number should be printed: the final result of the expression.
Here is a step-by-step evaluation for Sample Input 1.
Input
A single line consisting of integers and operators + - * /, separated by spaces.
The expression is always guaranteed to be valid.
Output
Output exactly one integer: the result of the expression.
The final computed answer is guaranteed to be an integer value.
Ensure that the output formatting matches exactly.