C PROGRAMMING PROGRAM • LOOPS & NUMBER PROBLEMS

Calculate Integer Power Using a Loop

Learn how to calculate integer power using a loop using a clear C program.

BeginnerExponentLoop multiplicationlong long

PROBLEM UNDERSTANDING

Input and expected output

Sample input

3 5

Sample output

Result = 243

COMPLETE C PROGRAM

Complete C implementation

#include <stdio.h>

int main(void)
{
    long long base, result = 1;
    int exponent;

    printf("Enter integer base and non-negative exponent: ");
    scanf("%lld %d", &base, &exponent);
    if (exponent < 0) {
        printf("Exponent must be non-negative.\n");
        return 0;
    }
    for (int count = 0; count < exponent; count++)
        result *= base;
    printf("Result = %lld\n", result);
    return 0;
}

CURRENT STEP

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EXPECTED OUTPUT FOR THE SAMPLE

Result = 243

0%Step 0 of 0

PROGRAM EXPLANATION

Algorithm and explanation

Read the required input values.
Multiply the result by the base once for every unit in the exponent.
Display the computed result.

Multiply the result by the base once for every unit in the exponent.

EFFICIENCY

Time and space complexity

Time complexity

O(n)

Auxiliary space

O(1)

DEBUGGING CHECKLIST

Common mistakes

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Use the correct format specifier for every variable.

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Initialize variables before using their values.

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Check braces, semicolons and input order carefully.

Try it yourself

Practice: Run the program with the sample input, predict its output, and then test one boundary case of your own.