把下面这段MATLAB代码转换为C语言function LossGain = CalaulateWindowGain(WindowLength,b,WindowType) %计算常见加窗技术对信号失配引起的能量损失 % WindowLength = 1001;%加窗的长度 Loss = 0;%加窗的信噪比损失 % b = 1;%加窗的调制深度 switch WindowType case 'Hanning'%w(n)=0.5(1?cos(2πn/N)),0≤n≤N N = WindowLength - 1; for i = 1:N Loss = Loss + abs((0.5*(1 - cos(2*pi*i/N))).^b); end LossGain = Loss/N.^2; case 'Hamming'%w(n)=0.54?0.46cos(2πn/N),0≤n≤N N = WindowLength - 1; for i = 1:N Loss = Loss + abs((0.54 - 0.46*cos(2*pi*i/N)).^b); end LossGain = Loss/N.^2; otherwise LossGain = 5.0e-4; end

在C语言中，可以将MATLAB代码转换为以下形式的函数：

#include <math.h>

double CalculateWindowGain(int WindowLength, int b, char* WindowType) {
    double Loss = 0;
    int N;
    
    if (strcmp(WindowType, "Hanning") == 0) {
        N = WindowLength - 1;
        for (int i = 1; i <= N; i++) {
            Loss += pow((0.5 * (1 - cos(2 * M_PI * i / N))), b);
        }
        return Loss / pow(N, 2);
    }
    else if (strcmp(WindowType, "Hamming") == 0) {
        N = WindowLength - 1;
        for (int i = 1; i <= N; i++) {
            Loss += pow((0.54 - 0.46 * cos(2 * M_PI * i / N)), b);
        }
        return Loss / pow(N, 2);
    }
    else {
        return 5.0e-4;
    }
}

这样就将MATLAB代码转换为了C语言函数。请注意，需要包含 `math.h` 头文件来使用数学函数，并使用 `strcmp` 函数来比较字符串。