c语言编程计算两角度加减

以下是使用C语言编写计算两个角度加减的示例代码：

#include <stdio.h>
#include <math.h>

int main()
{
    float angle1, angle2, sum, difference;

    printf("Enter the first angle in degrees: ");
    scanf("%f", &angle1);

    printf("Enter the second angle in degrees: ");
    scanf("%f", &angle2);

    // Convert angles to radians
    angle1 = angle1 * M_PI / 180;
    angle2 = angle2 * M_PI / 180;

    // Calculate sum and difference in radians
    sum = angle1 + angle2;
    difference = angle1 - angle2;

    // Convert sum and difference back to degrees
    sum = sum * 180 / M_PI;
    difference = difference * 180 / M_PI;

    printf("The sum of the two angles is: %.2f degrees\n", sum);
    printf("The difference of the two angles is: %.2f degrees\n", difference);

    return 0;
}

在这个示例中，我们首先提示用户输入两个角度，然后将它们转换为弧度。接下来，我们计算它们的和和差，然后将结果转换回度数并打印输出。注意，在进行角度转换时，我们使用了数学库中的`M_PI`常量，它表示圆周率$\pi$的值。