How to express power in c++

There are two ways to express power in C: use the pow() function: pow(base, exponent), where base is the base and exponent is the exponent. Use the ^ operator: base ^ exponent, which has higher precedence than arithmetic operators and applies to integer powers.

Representation of the power in C

In C, the power can be expressed aspow( base, exponent), where:

• base is the base
• exponent is the exponent

Use the pow() function

pow() The function is a standard library function in C used to calculate powers. The syntax is as follows:

double pow(double base, double exponent);

The following example demonstrates how to use the pow() function to calculate 2 raised to the third power:

#include <cmath>

using namespace std;

int main() {
    double base = 2;
    double exponent = 3;

    double result = pow(base, exponent);

    cout << "2 的 3 次方：" << result << endl;

    return 0;
}

Using operators

In addition to the pow() function, C can also use the operator ^ to express the power. Operator ^ has higher precedence than arithmetic operators, so it evaluates before expressions with higher precedence.

The following example demonstrates how to use the ^ operator to calculate 2 raised to the third power:

int main() {
    int base = 2;
    int exponent = 3;

    int result = base ^ exponent;

    cout << "2 的 3 次方：" << result << endl;

    return 0;
}

Notes

# The
• ##pow() function accepts double precision floating point values, while the ^ operator accepts integers.
• ^ operator gives inaccurate results when calculating to non-integer powers.
If the exponent is negative, it can be calculated using the overloaded version of the
• pow() function.

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