1.c?语言简语言源码??Լ?Դ??
2.如何用C语言编写一个简单的程序！
3.用C语言编写一个简单的单源图书管理小程序
4.用C语言写的计算器源代码
c???Լ?Դ??
#include
#include
#include
#include
#include
#include
#include
#include
#include
/* Define constants for the calculator */
#define UP 0x
#define DOWN 0x
#define LEFT 0x4B
#define RIGHT 0x4D
#define ENTER 0x0D
/* Global variables */
double num1 = 0, num2 = 0, result = 0;
char str1[] = ".+-*/知消扒Qc=^%";
char cnum[5], str2[] = "", c;
int x, y, x0, y0, i, j, v, m, n, act, flag = 1;
/* Function prototypes */
void drawboder(void);
void initialize(void);
void computer(void);
void changetextstyle(int font, int direction, int charsize);
void mwindow(char *header);
int specialkey(void);
int arrow();
/* Main function */
int main() {
initialize();
computer();
closegraph();
return 0;
}
/* Initialize the graphics system */
void initialize(void) {
int xasp, yasp;
GraphDriver = DETECT;
initgraph( &GraphDriver, &GraphMode, "" );
ErrorCode = graphresult();
if (ErrorCode != grOk) {
printf("Graphics System Error: %s\n", grapherrormsg(ErrorCode));
exit(1);
}
getpalette( &palette );
MaxColors = getmaxcolor() + 1;
MaxX = getmaxx();
MaxY = getmaxy();
getaspectratio( &xasp, &yasp );
AspectRatio = (double)xasp / (double)yasp;
}
/* Main calculator function */
void computer(void) {
struct viewporttype vp;
int color, height, width;
mwindow("Calculator");
color = 7;
getviewsettings( &vp );
width = (vp.right + 1) / ;
height = (vp.bottom - ) / ;
x = width / 2;
y = height / 2;
setfillstyle(SOLID_FILL, color + 3);
bar( x + width * 2, y, x + 7 * width, y + height );
setcolor( color + 3 );
rectangle( x + width * 2, y, x + 7 * width, y + height );
setcolor(RED);
outtextxy(x + 3 * width, y + height / 2, "0.");
x = 2 * width - width / 2;
y = 2 * height + height / 2;
for (j = 0; j < 4; ++j) {
for (i = 0; i < 5; ++i) {
setfillstyle(SOLID_FILL, color);
setcolor(RED);
bar( x, y, x + width, y + height );
rectangle( x, y, x + width, y + height );
sprintf(str2, "%c", str1[j * 5 + i]);
outtextxy( x + (width / 2), y + height / 2, str2);
x += width + (width / 2);
}
y += (height / 2) * 3;
x = 2 * width - width / 2;
}
x0 = 2 * width;
y0 = 3 * height;
x = x0;
y = y0;
gotoxy(x, y);
arrow();
m = 0;
n = 0;
strcpy(str2, "");
while ((v = specialkey()) != ) {
while ((v = specialkey()) != ENTER) {
putimage(x, y, rar, XOR_PUT);
if (v == RIGHT) {
if (x >= x0 + 6 * width)
x = x0;
else
x += width + width / 2;
m++;
}
if (v == LEFT) {
if (x <= x0)
x = x0 + 6 * width;
else
x -= width - width / 2;
m--;
}
if (v == UP) {
if (y <= y0)
y = y0 + 4 * height + height / 2;
else
y -= height - height / 2;
n--;
}
if (v == DOWN) {
if (y >= 7 * height)
y = y0;
else
y += height + height / 2;
n++;
}
putimage(x, y, rar, XOR_PUT);
}
c = str1[n * 5 + m];
if (isdigit(c) || c == '.') {
if (flag == -1) {
strcpy(str2, "-");
flag = 1;
}
sprintf(temp, "%c", c);
strcat(str2, temp);
setfillstyle(SOLID_FILL, color + 3);
bar(2 * width + width / 2, height / 2, * width / 2, 3 * height / 2);
outtextxy(5 * width, height, str2);
}
if (c == '+') {
num1 = atof(str2);
strcpy(str2, "");
act = 1;
setfillstyle(SOLID_FILL, color + 3);
bar(2 * width + width / 2, height / 2, * width / 2, 3 * height / 2);
outtextxy(5 * width, height, "0.");
}
if (c == '-') {
if (strcmp(str2, "") == 0)
flag = -1;
else {
num1 = atof(str2);
strcpy(str2, "");
act = 2;
setfillstyle(SOLID_FILL, color + 3);
bar(2 * width + width / 2, height / 2, * width / 2, 3 * height / 2);
outtextxy(5 * width, height, "0.");
}
}
if (c == '*') {
num1 = atof(str2);
strcpy(str2, "");
act = 3;
setfillstyle(SOLID_FILL, color + 3);
bar(2 * width + width / 2, height / 2, * width / 2, 3 * height / 2);
outtextxy(5 * width, height, "0.");
}
if (c == '/') {
num1 = atof(str2);
strcpy(str2, "");
act = 4;
setfillstyle(SOLID_FILL, color + 3);
bar(2 * width + width / 2, height / 2, * width / 2, 3 * height / 2);
outtextxy(5 * width, height, "0.");
}
if (c == '^') {
num1 = atof(str2);
strcpy(str2, "");
act = 5;
setfillstyle(SOLID_FILL, color + 3);
bar(2 * width + width / 2, height / 2, * width / 2, 3 * height / 2);
outtextxy(5 * width, height, "0.");
如何用C语言编写一个简单的程序！
上了大学有很多同学都在学习C语言，简单C++就是语言简语言源码色诱网源码C语言的一种，那么怎么用c语言写一个简单的单源程序hello world呢，下边来给大家演示一下
工具/材料
电脑，简单c语言软件
1、语言简语言源码鼠标左键双击c语言软件，单源打开，简单打开后界面如图，语言简语言源码点击关闭即可
2、单源hwdgame 源码点击上方程序窗口左上角的简单文件，选择新建
3、语言简语言源码在打开的单源窗口中选择文件，下边一般是简单第四个 c++Source file，输入文件名（hellw.c），deepdive 源码一定要以“.c”为后缀结尾
4、进入编辑页面在，页面编辑源代码就可以
#includestdio.h
void main()
{
printf(hello world!n);
}
然后选择保存，打印，输出运行。iremember 源码
5、输出的效果就是这样了，一个简单的c语言程序就写好了
特别提示
所有的输入都要在英文半角的情况下输入，不然程序会不能识别，会报错。flowable源码
用C语言编写一个简单的图书管理小程序
源代码如下：#include<iostream>
#include<iomanip>
#include<string>
#include<fstream>
#include<stdio.h>
using namespace std;
const int maxb=; //最多的图书
class book//图书类
{
int tag; //删除标记1:已删0:未删
int number; //isbn书号
char name[]; //书名
char author[]; //主编
char number2[];//版次
char position[];//出版社
char time[];//出版年
void addbook(int n,char *na,char *au,char *n2,char *da,char *ti,int pr) //增加图书
{
tag=0;
number=n;
price=pr;
strcpy(name,na);
strcpy(author,au);
strcpy(number2,n2);
strcpy(position,da);
strcpy(time,ti);
onshelf=1;
}
扩展资料
1、源程序中，很多符号都是成对匹配出现的，为避免遗漏必须配对使用的符号。
2、用花括号括起来的部分，但从程序结构清晰，便于阅读、理解、维护的角度出发，建议在书写程序时应遵循以下规则，以养成良好的编程习惯。
3、一个说明或一条语句占一行，与该结构开始处的左花括号对齐。
用C语言写的计算器源代码
#include<stdio.h>
#include<iostream.h>
#include<stdlib.h>
#include<string.h>
#include<ctype.h>
typedef float DataType;
typedef struct
{
DataType *data;
int max;
int top;
}Stack;
void SetStack(Stack *S,int n)
{
S->data=(DataType*)malloc(n*sizeof(DataType));
if(S->data==NULL)
{
printf("overflow");
exit(1);
}
S->max=n;
S->top=-1;
}
void FreeStack(Stack *S)
{
free(S->data);
}
int StackEmpty(Stack *S)
{
if(S->top==-1)
return(1);
return(0);
}
DataType Peek(Stack *S)
{
if(S->top==S->max-1)
{
printf("Stack is empty!\n");
exit(1);
}
return(S->data[S->top]);
}
void Push(Stack *S,DataType item)
{
if(S->top==S->max-1)
{
printf("Stack is full!\n");
exit(1);
}
S->top++;
S->data[S->top]=item;
}
DataType Pop(Stack *S)
{
if(S->top==-1)
{
printf("Pop an empty stack!\n");
exit(1);
}
S->top--;
return(S->data[S->top+1]);
}
typedef struct
{
char op;
int inputprecedence;
int stackprecedence;
}DataType1;
typedef struct
{
DataType1 *data;
int max;
int top;
}Stack1;
void SetStack1(Stack1 *S,int n)
{
S->data=(DataType1*)malloc(n*sizeof(DataType1));
if(S->data==NULL)
{
printf("overflow");
exit(1);
}
S->max=n;
S->top=-1;
}
void FreeStack1(Stack1 *S)
{
free(S->data);
}
int StackEmpty1(Stack1 *S)
{
if(S->top==-1)
return(1);
return(0);
}
DataType1 Peek1(Stack1 *S)
{
if(S->top==S->max-1)
{
printf("Stack1 is empty!\n");
exit(1);
}
return(S->data[S->top]);
}
void Push1(Stack1 *S,DataType1 item)
{
if(S->top==S->max-1)
{
printf("Stack is full!\n");
exit(1);
}
S->top++;
S->data[S->top]=item;
}
DataType1 Pop1(Stack1 *S)
{
if(S->top==-1)
{
printf("Pop an empty stack!\n");
exit(1);
}
S->top--;
return(S->data[S->top+1]);
}
DataType1 MathOptr(char ch)
{
DataType1 optr;
optr.op=ch;
switch(optr.op)
{
case'+':
case'-':
optr.inputprecedence=1;
optr.stackprecedence=1;
break;
case'*':
case'/':
optr.inputprecedence=2;
optr.stackprecedence=2;
break;
case'(':
optr.inputprecedence=3;
optr.stackprecedence=-1;
break;
case')':
optr.inputprecedence=0;
optr.stackprecedence=0;
break;
}
return(optr);
}
void Evaluate(Stack *OpndStack,DataType1 optr)
{
DataType opnd1,opnd2;
opnd1=Pop(OpndStack);
opnd2=Pop(OpndStack);
switch(optr.op)
{
case'+':
Push(OpndStack,opnd2+opnd1);
break;
case'-':
Push(OpndStack,opnd2-opnd1);
break;
case'*':
Push(OpndStack,opnd2*opnd1);
break;
case'/':
Push(OpndStack,opnd2/opnd1);
break;
}
}
int isoptr(char ch)
{
if(ch=='+'||ch=='-'||ch=='*'||ch=='/'||ch=='(')
return(1);
return(0);
}
void Infix(char *str)
{
int i,k,n=strlen(str);
char ch,numstr[];
DataType opnd;
DataType1 optr;
Stack OpndStack;
Stack1 OptrStack;
SetStack(&OpndStack,n);
SetStack1(&OptrStack,n);
k=0;
ch=str[k];
while(ch!='=')
if(isdigit(ch)||ch=='.')
{
for(i=0;isdigit(ch)||ch=='.';i++)
{
numstr[i]=ch;
k++;
ch=str[k];
}
numstr[i]='\0';
opnd= atof(numstr);
Push(&OpndStack,opnd);
}
else
if(isoptr(ch))
{
optr=MathOptr(ch);
while(Peek1(&OptrStack).stackprecedence>=optr.inputprecedence)
Evaluate(&OpndStack,Pop1(&OptrStack));
Push1(&OptrStack,optr);
k++;
ch=str[k];
}
else if(ch==')')
{
optr=MathOptr(ch);
while(Peek1(&OptrStack).stackprecedence>=optr.inputprecedence)
Evaluate(&OpndStack,Pop1(&OptrStack));
Pop1(&OptrStack);
k++;
ch=str[k];
}
while(!StackEmpty1(&OptrStack))
Evaluate(&OpndStack,Pop1(&OptrStack));
opnd=Pop(&OpndStack);
cout<<"你输入表达式的计算结果为"<<endl;
printf("%-6.2f\n",opnd);
FreeStack(&OpndStack);
FreeStack1(&OptrStack);
}
void main()
{
cout<<"请输入你要计算的表达式,并以“=”号结束。"<<endl;
char str[];
gets(str);
Infix(str);
=================================================================
哈哈！给分吧！