jason week12

 1-1

新增一個空白檔案,今天講fprintf的應用

#include<stdio.h>

int main()

{

    FILE*fout=fopen("file.txt","w");

    printf("Hello World\n");

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

}

1-1-2

後來講解fscanf的功用

#include<stdio.h>

int main()

{

    char line[20];

    FILE*fin=fopen("file.txt","r");

    fscanf(fin,"%s",line);

    printf("讀到了:%s\n",line);

    fscanf(fin,"%s",line);

    printf("讀到了:%s\n",line);

}

1-1-3

新增fopen,fclose

讀入數字

#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);

}

2-1

新增一個專案,用滑鼠和鍵盤操控茶壺

week12-4_keyboard_mouse

#include<stdio.h>

#include<GL/glut.h>

float teapotX=0,teapotY=0;

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();

}

2-2

修改上面的程式碼,按住空白鍵的時候可以重複你剛剛點擊的位置

#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();

}

3-1

更改freeglut.dll的位置,從property-build target-working dir(改成小數點)

編輯week12-4...   .cbp檔,用notepad++編輯,把working dir 引號裡面的位置改成小數點

3-2

複製week12-4專案,並改名final_project,再去codeblocks把final_project裡的cbp檔改名final_project