Week12_10160863_檔案file、鍵盤、滑鼠vs角度

 Week12檔案file、鍵盤、滑鼠vs角度

開啟新專案命名為week12-1_printf_fprintf.cpp

存在桌面

程式碼

#include <stdio.h> int main() {///檔案指標 fout = 開檔案("檔名", "用甚麼模式"); FILE * fout = fopen("file.txt", "w");///:write printf("Hello World\n"); fprintf(fout,"Hello World在檔案裡\n");; }

開啟新專案命名為week12-1_scanf_fscanf.cpp存在桌面

程式碼

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

開啟新專案命名為week12-3_many_numbers_scanf_printf_fscanf_fprintf.cpp

程式碼

#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); }

#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(); }

#include <stdio.h> #include <GL/glut.h> FILE * fout = NULL; FILE * fin = NULL; 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; 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); glutMouseFunc(mouse); glutKeyboardFunc(keyboard); glutMainLoop(); }