m week12

 week12

step01-1

開codeblocks

開新的空白檔案 week12-1_printf_fprintf.cpp

程式碼

///要開檔案的指標 fopen()

#include <stdio.h>

int main()

{///檔案指標 fout = fopen("檔名", "模式");///w:write

    FILE * fout = fopen("file.txt", "w");

    printf("Hello World\n");

    fprintf(fout, "Hello World在檔案裡\n");

}

檔案在桌面

開新的檔案 week12-2_scanf.cpp

程式碼

#include <stdio.h>

int main()

{

    char line[20];

    FILE * fin = fopen("file.txt", "r");///r:read

    fscanf(fin, "%s", line);

    printf("讀到了:%s\n", line);

    fscanf(fin, "%s", line);

    printf("讀到了:%s\n", line);

}

開新的檔案 week12-3_fopen_fclose_fprintf_fscanf.cpp

程式碼

#include <stdio.h>

int main()

{

    int a[10] = {10,20,30,40,50,60,70,80,90,100};

    FILE * fout = fopen("file3.txt", "w");

    for(int i=0;i<10;i++){

        fprintf(fout, "%d ", a[i] );

        printf("%d ", a[i] );

    }

    fclose(fout);

    int b[10];

    FILE * fin = fopen("file3.txt", "r");

    for(int i=0;i<10;i++){

        fscanf(fin, "%d", &b[i] );

        printf("%d ", b[i] );

    }

    fclose(fin);

}

step02-1

開新的GLUT專案 week12-4_keyboard_mouse

滑鼠移動茶壺

#include <stdio.h>

#include <GL/glut.h>

float teapotX = 0, teapotY = 0;

FILE * fout = NULL;

FILE * fin = NULL;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glTranslatef(teapotX,teapotY,0);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

void  mouse(int button,int state,int x,int y)

{

    teapotX=(x-150)/150.0;

    teapotY=(150-y)/150.0;

    display();

}

int main(int argc,char** argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week12");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMainLoop();

}

修改程式碼

#include <stdio.h>

#include <GL/glut.h>

float teapotX = 0, teapotY = 0;

FILE * fout = NULL;

FILE * fin = NULL;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glTranslatef(teapotX,teapotY,0);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

void  mouse(int button,int state,int x,int y)

{

    teapotX=(x-150)/150.0;

    teapotY=(150-y)/150.0;

    if(state==GLUT_DOWN){

        if(fout==NULL) fout = fopen("file4.txt", "w");

        fprintf(fout, "%f %f\n", teapotX, teapotY);

    }

    display();

}

void keyboard(unsigned char key, int x, int y)

{

    if(fin==NULL){

        fclose(fout);

        fin = fopen("file4.txt", "r");

    }

    fscanf(fin, "%f%f", &teapotX, &teapotY);

    display();

}

int main(int argc,char** argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week12");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMainLoop();

}

step03-1

更改工作目錄

把freeglut的bin裡面的freeglut.dll丟到專案資料夾裡

這樣工作目錄就會在專案裡面

step03-2

專案week12-4_keyboard_mouse改成 final_project

week12-4_keyboard_mouse.cbp 也要改成 final_project

重新打開專案後名子也要改成 final_project