12binggreen

 week12-1

開檔案指標 fout = fopen("檔名","模式")

#include<stdio.h>

int main()

{

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

    printf("Hello World\n");

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

}

week12-2

week12-3

寫到檔案 再讀檔案後印出來

#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);

}

week12-4

滑鼠點位置 茶壺會移動

#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;

}

int main(int argc, char *argv[])

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week12");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMainLoop();

}

加上kayboard

茶壺的視窗關掉後 剛剛的座標資料會顯示在freeglut>bin>file4

#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);

    }

}

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_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week12");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMainLoop();

}

把原本的改成.

freeglut.dll貼到專案資料夾

設定好後 file4就會直接出現在專案裡面