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Why Isn't My C Code's '^' Operator Calculating Powers Correctly?

Patricia Arquette
Release: 2024-12-20 11:18:15
Original
318 people have browsed it

Why Isn't My C Code's

Why is the Power Operator Not Working as Expected?

In the provided C code, an attempt is made to use the "^" operator for performing power operations. However, the output is incorrect because "^" does not serve as the power operator in C/C . Instead, it is defined as the bit-wise XOR operator.

The code intends to calculate the sum of the powers of the entered number "a" from 1 to 4. To achieve this correctly, the pow() function should be utilized, which requires casting one of its arguments to double. The modified code would be:

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#include <stdio.h>

 

void main(void)

{

    int a;

    double result;

    int sum = 0;

    printf("Enter a number: ");

    scanf("%d", &a);

    for( int i = 1; i <= 4; i++ )

    {

        result = (int) pow((double) a,i);

        sum += result;

    }

    printf("%d\n", sum);

}

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Additionally, it's worth noting that since C99, the powf() and powl() functions have been introduced to support float and long double arguments, respectively.

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