First Class Homework

through this course, I have made myClanguage has a deeper level of understanding,Getchestatements, forstatements, whilestatements,printfstatements,Switchthe understanding and use of statements, color functions, and so on are more detailed, and the usage of these statements is clearly understood .Cthe use of language environment, function. Clanguage, as a basic programming language, is an indispensable language in future programming, and the usage rate will definitely increase. Mastered theClanguage is the equivalent of mastering a technology, whileClanguage is relatively simple and easier to understand. Although I have a part of the game of the transformation, but I also feel that this is only a very small part of it, there will certainly be more powerful features waiting for us to improve. At the same time, I also found myself a lot of shortcomings, need to further strengthen this aspect of learning, clear of their own in which aspect of the lack, hope can be more thorough in the future study to make up for their shortcomings, improve the situation, but also hope that they can easily write some small game code, I believe that I can also in the later learning process gradually mastered it, thoroughly mastered it, so that it become a sword in their hands.

learning c language can not stay in learning its grammatical rules, but use the knowledge learned to write c language program to solve practical problems. That is, the c language as a tool to describe the steps to solve the actual problem, The computer helps us to solve the problem. Only through the machine can you test whether you master the c language, Whether the program you write is able to solve the problem correctly.

a C language programs can be edited, compiled, connected, and run in a certain external operating environment. The so-called " environment " is the computer system hardware, software conditions, only learn to use these environments, to carry out program development work. Through the computer experiment, Master the C language development environment skillfully, and lay the foundation for solving practical problems in the future, it will be comprehend by analogy when encountering other development environment, and soon master the use of the new system.

The completion of the program is never meant to be done. An infallible program, in effect, can be a constant problem. Sometimes the program itself does not have a syntax error and can run smoothly, but the result is obviously wrong. The compilation system provided by the development environment can not find this kind of program logic error, can only rely on their own experience analysis to determine the error. Program debugging is a very skilled work, for me, as soon as possible to master the program debugging method is very important. Sometimes a small mistake can take me a few hours, debugging a master at a glance to see the error.

Here is the program code for airplane Games:

#include <stdio.h>
#include <conio.h>

#include <stdlib.h>
#include <time.h>
#define N 35
void print (int [][n]);//Output function
void Movebul (int [][n]);//bullet Move function
void Movepla (int [][n]);//enemy Movement function
void setting (void);//Set function
void menu (void);//Menu function
void oper (void);//Operation function
int scr[22][n]={0},pl=9,width=24,speed=3,density=30,score=0,death=0;//Global Variables: interface, my machine initial position, interface width, enemy speed, enemy plane density, score, death
Main (void)
{
menu ();
Oper ();
}

void Oper ()
{
int i=0,j=0;
Scr[21][pl]=1;
scr[0][5]=3;
while (1)
{
if (Kbhit ())
Switch (Getch ())//control move around and enter menu
{
Case ' A ': Case ' a ':
if (pl>0)
Scr[21][pl]=0,scr[21][--pl]=1;
Break
Case ' d ': Case ' d ':
if (pl<width-2)
Scr[21][pl]=0,scr[21][++pl]=1;
Break
Case ' W ': Case ' W ':
scr[20][pl]=2;
Break
Case 27:
Setting ();
Break
}
if (++j%density==0)//control the speed of production of enemy aircraft
{
J=0;srand (Time (NULL));
Scr[0][rand ()%width]=3;
}
if (++i%speed==0)//control enemy movement speed, relative to the speed of the bullet movement
Movepla (SCR);
Movebul (SCR);

Print (SCR);
if (i==30000)
i=0;//lest I cross the border
}
}
void print (int a[][n])
{
System ("CLS");
int i,j;
for (i=0;i<22;i++)
{
a[i][width-1]=4;
for (j=0;j<width;j++)
{
if (a[i][j]==0)
printf ("");
if (a[i][j]==1)
printf ("\5");//output the symbol of my machine
if (a[i][j]==2)
printf ("."); /Bullets
if (a[i][j]==3)
printf ("\3"); Output enemy Symbol
if (a[i][j]==4)
printf ("|");
if (i==0&&j==width-1)
printf ("Score:%d", score);//The top right corner shows the score
if (i==1&&j==width-1)
printf ("Death:%d", death);
if (i==2&&j==width-1)
printf ("Settings: Esc");
if (i==3&&j==width-1)
printf ("Copyright: Wang Yu");
}
printf ("\ n");
}
}
void Movebul (int a[][n])
{
int i,j;
for (i=0;i<22;i++)
for (j=0;j<width;j++)
{
if (i==0&&a[i][j]==2)
a[i][j]=0;
if (a[i][j]==2)
{
if (a[i-1][j]==3)
score+=10,printf ("\7");
a[i][j]=0,a[i-1][j]=2;
}
}
}
void Movepla (int a[][n])
{
int i,j;
for (i=21;i>=0;i--)//from the last line up is to avoid the enemy aircraft directly rushed to the group.
for (j=0;j<width;j++)
{
if (i==21&&a[i][j]==3)
a[i][j]=0;//the bottom row is assigned a value of 0 to avoid crossing.
if (a[i][j]==3)
a[i][j]=0,a[i+1][j]=3;
}
if (a[20][pl]==3&&a[21][pl]==1)
death++;
}
void setting (void)
{
int sw=0,i,j;
System ("CLS");
do{sw=0;printf ("\ n the size of the game interface: 1. Big 2. >>");
Switch (Getche ())
{
Case ' 1 ':
width=34;
Break
Case ' 2 ':
width=24;
Break
Default
printf ("\ n error, please re-select ... \ n");
Sw=1;
}
}
while (SW);
Do
{
sw=0;
printf ("\ n Please select enemy aircraft density: 1.2. Medium 3. Small >>");
Switch (Getche ())
{
Case ' 0 ':
density=10;
Break
Case ' 1 ':
density=20;
Break
Case ' 2 ':
density=30;
Break
Case ' 3 ':
density=40;
Break
Default
printf ("\ n error, please re-select ... \ n");
Sw=1;
}
}while (SW);
Do
{
sw=0;
printf ("\ nthe enemy aircraft speed: 1. Fast 2.3. Slow >>");
Switch (Getche ())
{
Case ' 1 ':
speed=2;
Break
Case ' 2 ':
speed=3;
Break
Case ' 3 ':
speed=4;
Break
Default
printf ("\ n error, please re-select ... \ n");
Sw=1;
}
}while (SW);
for (i=0;i<22;i++)
for (j=0;j<45;j++)
scr[i][j]=0;
Scr[21][pl=9]=1;
printf ("\ n Press any key to save ...");
Getch ();
}
void menu (void)
{
printf ("Description: Press a D to control my flight, W fired bullets \ n set: Please press esc\n to start the game: any key \ n by Yan_xu");
if (Getch () ==27)
Setting ();
}

/*

First Class Homework