0504

 WEEK12

step01-1 

新的空白檔案 練習寫檔案

程式碼:

#include <stdio.h>

int main()

{

    ///檔案指標 fout = fopen("檔名","模式");要開檔

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

    printf("Hello World");

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

}

step01-2 

程式碼

#include<stdio.h>

int main()

{

    char line[20];

    ///scanf("%s",line);

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

    fscanf(fin,"%s",line);

    printf("讀到了:%s\n",line);///馬上印

    fscanf(fin,"%s",line);

    printf("讀到了:%s\n",line);///馬上印

}

step01-3

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]);///寫到檔案去 同時

        printf("%d ",a[i]);///順便印出來 讓你看看

    }

    fclose(fout);

    int b[10];

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

    for ( int i=0;i<10;i++ )

    {

        fscanf(fin, "%d", &b[i]);///讀到陣列b[i]裡

        printf("%d ",b[i]);

    }

    fclose(fin);

}

STEP02-1

開心的GLUT專案

茶壺跟著滑鼠案的地方移動

程式碼:

STEP02-2

程式碼:

#include <stdio.h>

#include <GL/glut.h>

float teapotX=0,teapotY=0;

FILE * fout = NULL;///step02-1

FILE * fin = NULL;///step02-2

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 )///如果mouse按下去

    {

        if( fout==NULL )  fout=fopen("file4.txt","w");///step02-2

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

    }

    display();

}

void keyboard(unsigned char key, int x, int y )///step02-2

{

    if ( fin==NULL )

    {

        fclose(fout);///step02-2

        fin = fopen("file4.txt","r");///step02-2

    }

    display();///step02-2

}

int main(int argc , char** argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week12");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);///step02-2

    glutMouseFunc(mouse);///step02-1

    glutMainLoop();

}

茶壺會跟著滑鼠案的地方移動

再按空白鍵 茶壺會跟著

STEP03-1

CodeBlocks的專案設定 project  properties 裡第二個 build target 

Executing working dir 工作執行目錄

原本是:C:\User\Adiministrator\Desktop\freeglut\bin

改成小數點. 再file save everthing 便能將專案檔設好 存檔

之後再執行工作執行目錄 就在你的程式專案的那個目錄裡

但執行就會少一個 freeglut.dll檔 手動複製到自己的專案裡