咻碰閃week12

 week12

1-1 CodeBlocks開新空白頁並存成cpp檔，week12-1_printf_fprintf.cpp

#include <stdio.h>

int main()

{///檔案指標 fout = fopen("檔名","模式"); 要開檔

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

    printf("Hello World\n");

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

}

執行後，會新增記事本與原檔案儲存至相同目錄裡

1-2 CodeBlocks開新空白頁並存成cpp檔，week12-2_scanf

讀到空格停

#include <stdio.h>

int main()

{

    char line[20];

    ///scanf("%s",line);

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

    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

}

1-3 week12-3_fopen_fclose_fprintf_fscanf

#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);

}

2-1 開新專案，用滑鼠控制茶壺移動，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 week12-4_keybaord_mouse 要能用mouse來移動，同時要解決讀檔的問題

///week12-4_keybaord_mouse 要能用mouse來移動，同時要解決讀檔的問題

#include <stdio.h>///要檔案的Input/Output

#include <GL/glut.h>

float teapotX=0, teapotY=0;

FILE * fout = 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();

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week12");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMainLoop();

}

2-3 滑鼠及空白鍵控制茶壺移動

#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();

}

2-4 解決歷史餘毒

project>properites>Build target>Execution working dir改成" 

將freeglut.dll複製進與main相同目錄