Week12

#include <stdio.h>

int main()

{

    ///檔案指標 fout = 開檔案("檔名", "用什麼模式")

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

    printf("Hello World");

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

}

build and run 後就會在目錄出現這個txt檔

#include <stdio.h>

int main()

{

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

    char line[100];

    fscanf(fin, "%s", line);

    printf("從file.txt讀到了: %s\n", line);

    ///應為遇到空格會斷掉所以在加一行

    fscanf(fin ,"%s", line);

    printf("從file.txt讀到了: %s\n", line);

}

#include <stdio.h>

int main()

{

    int a[10] = {10, 20, 30, 40, 50, 60, 70, 80, 90, 100};

    int b[10] = {};

    FILE * fout = fopen ("file3.txt", "w");

    for(int i = 0; i<10; i++)

        {

            printf("%d ", a[i]);

            fprintf(fout," %d ", a[i]);

        }

    printf("\n");

    fprintf(fout, "\n");

    fclose(fout);

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

    for(int i = 0; i<10; i++) {

        fscanf(fin, "%d", &b[i]);

        printf("b %d:%d ", i, b[i]);

    }

    fclose(fin);

}

	///在project-properties 到build target 可以去上面把目錄改成小數點. ///build target debug 和 release 都要改成小數點. ///記得去freeglut把freeglut.dll放到錄中  #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)
	{
	if(state==GLUT_DOWN)
	{
	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();
	}