请使用C++和OpenGL编写导入obj模型文件并为模型贴图的代码，模型文件名为stdT.obj

好的，以下是一个简单的导入.obj模型文件并为模型贴图的C++和OpenGL代码示例：

#include <GL/glut.h>
#include <iostream>
#include <fstream>
#include <vector>
#include <cstring>

using namespace std;

// 存储顶点坐标的向量
vector<float> vertices;
// 存储纹理坐标的向量
vector<float> texcoords;

// 加载.obj模型文件
bool loadOBJ(const char* filename) {
    ifstream ifs(filename);
    if (!ifs) {
        cerr << "Error: cannot open file " << filename << endl;
        return false;
    }

    // 解析文件
    char buf[256];
    while (ifs.getline(buf, 256)) {
        if (strncmp(buf, "v ", 2) == 0) {
            float x, y, z;
            sscanf(buf + 2, "%f %f %f", &x, &y, &z);
            vertices.push_back(x);
            vertices.push_back(y);
            vertices.push_back(z);
        } else if (strncmp(buf, "vt ", 3) == 0) {
            float u, v;
            sscanf(buf + 3, "%f %f", &u, &v);
            texcoords.push_back(u);
            texcoords.push_back(v);
        } else if (strncmp(buf, "f ", 2) == 0) {
            int v1, t1, v2, t2, v3, t3;
            sscanf(buf + 2, "%d/%d %d/%d %d/%d", &v1, &t1, &v2, &t2, &v3, &t3);
            // 将三个顶点加入OpenGL的顶点数组中
            glVertex3f(vertices[(v1 - 1) * 3], vertices[(v1 - 1) * 3 + 1], vertices[(v1 - 1) * 3 + 2]);
            glVertex3f(vertices[(v2 - 1) * 3], vertices[(v2 - 1) * 3 + 1], vertices[(v2 - 1) * 3 + 2]);
            glVertex3f(vertices[(v3 - 1) * 3], vertices[(v3 - 1) * 3 + 1], vertices[(v3 - 1) * 3 + 2]);
            // 将三个纹理坐标加入OpenGL的纹理坐标数组中
            glTexCoord2f(texcoords[(t1 - 1) * 2], texcoords[(t1 - 1) * 2 + 1]);
            glTexCoord2f(texcoords[(t2 - 1) * 2], texcoords[(t2 - 1) * 2 + 1]);
            glTexCoord2f(texcoords[(t3 - 1) * 2], texcoords[(t3 - 1) * 2 + 1]);
        }
    }

    ifs.close();
    return true;
}

void display() {
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    gluLookAt(0.0, 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);

    // 加载纹理
    GLuint texture;
    glGenTextures(1, &texture);
    glBindTexture(GL_TEXTURE_2D, texture);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    int width, height;
    unsigned char* image = SOIL_load_image("texture.jpg", &width, &height, 0, SOIL_LOAD_RGB);
    if (!image) {
        cerr << "Error: cannot load texture file" << endl;
        exit(1);
    }
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
    SOIL_free_image_data(image);

    // 绘制模型
    glBegin(GL_TRIANGLES);
    glColor3f(1.0, 1.0, 1.0);
    if (!loadOBJ("stdT.obj")) {
        cerr << "Error: cannot load OBJ file" << endl;
        exit(1);
    }
    glEnd();

    glFlush();
}

void reshape(int w, int h) {
    glViewport(0, 0, w, h);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluPerspective(60.0, (GLfloat)w / (GLfloat)h, 1.0, 100.0);
}

int main(int argc, char** argv) {
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB | GLUT_DEPTH);
    glutInitWindowSize(500, 500);
    glutCreateWindow("OBJ Model Viewer");
    glutDisplayFunc(display);
    glutReshapeFunc(reshape);
    glEnable(GL_DEPTH_TEST);
    glutMainLoop();
    return 0;
}

请确保在编译和运行代码之前，已经安装了OpenGL和SOIL（Simple OpenGL Image Library）库。此外，还需要将纹理文件texture.jpg和模型文件stdT.obj放在同一目录下。