C 语言计算正方形周长的程序

编写一个C语言程序来计算正方形的周长。此示例允许输入正方形的边长，并使用（4 * 边长）数学公式来计算周长。

#include <stdio.h>

int main()
{
    float Sqrside, Sqrperimeter;
    
    printf("Enter the Square Side = ");
    scanf("%f",&Sqrside);

    Sqrperimeter = 4 * Sqrside;

    printf("The perimeter of a Square = %.2f\n", Sqrperimeter); 
    
    return 0;
}

在此 程序 中，用户定义的函数接受边长并计算正方形的周长。

#include <stdio.h>

float squarePerimeter(float Sqrside)
{
    return 4 * Sqrside;
}
int main()
{
    float Sqrside, Sqrperimeter;
    
    printf("Enter the Side = ");
    scanf("%f",&Sqrside);

    Sqrperimeter = squarePerimeter(Sqrside);

    printf("The perimeter = %.2f\n", Sqrperimeter); 
    
    return 0;
}

Enter the Side = 14
The perimeter = 56.00


Enter the Side = 9
The perimeter = 36.00