於week12

 week12

練習寫檔案(fprintf)

week12-1

*讀出Hello World
 f 是檔案指標

檔案指標 fout = fopen("檔名", "w") 就會寫檔出去

#include <stdio.h>
int main(){
    FILE * fout = fopen("file.txt", "w");
    printf("Hello World\n");
    fprintf(fout, "Hello World在檔案裡\n");
}

讀入檔案(fscanf)

week12-2

* 檔案指標 fin = fopen("檔名", "r") 把檔案讀進來

#include <stdio.h>

int main(){

    char line[20];

    ///scanf("%s", line);

    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);

}

在同一程式中有寫檔案&讀檔案

week12-3

#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);

}

mouse

week12-4

* 開啟新的glut專案
   用 mouse來移動

#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();

}

keyboard

week12-5

* 用 keyboard來觸發讀檔

#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();

}

調整工作執行目錄

* 先改位址

到四格顏色按右鍵選Properties，或到Project-Properties即可更改

到Build targets 把Debug&Release的位址都改成"."

* 將目錄拉回

到freeflut的bin資料夾把檔案拉回week12-4資料夾

* 在同目錄裡寫期末作業

複製一個week12-4資料夾並改名成Final Project

將專案檔(.cbp)也改名

把Project-Properties的title 也改名並save everything

再丟入github

如何github

1. 開啟 Git Bash

2. cd desktop 進入桌面
    git clone https://github.com/jsyeh/2021cce2 把雲端複製下來
    cd 2021cce2 進入你的目錄

3. 把你的 桌面\2021cce2 裡面, 放好你本週的程式 ex. week06 裡面有今天的程式

4. 先把你放好的程式,加入 git 的帳冊
git status (看到紅紅的檔案)

git add .

git status (看到綠綠的檔案)

5. 你要 commit 它
git config --global user.email jsyeh@mail.mcu.edu.tw
git config --global user.name jsyeh

git commit -m "add week06" 

6. git push 推送上雲端