Cid week12

Step01-1

開codeblocks空白檔案印出Hello World在file.txt的檔案裡

程式碼

檔案名稱 檔案印出的字

#include <stdio.h>

int main()

{

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

    printf("Hello World\n");

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

}

Step01-2

讀檔案

程式碼

#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);

}

Step01-3

在file3.txt印檔案讀檔案

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

畫出茶壺，並利用滑鼠來移動茶壺

程式碼

#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();

}

Step02-2

利用記事本紀錄滑鼠移動的座標

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

設定codeblocks的執行目錄

並把freeglut.dll檔案複製到專案內