c编计算器源码大全

⑴ 用c语言编写计算器

#include <stdio.h>
struct s_node
{
int data;
struct s_node *next;
};
typedef struct s_node s_list;
typedef s_list *link;
link operator=NULL;
link operand=NULL;

link push(link stack,int value)
{
link newnode;

newnode=(link) malloc(sizeof(s_list));
if(!newnode)
{
printf("\nMemory allocation failure!!!");
return NULL;
}
newnode->data=value;
newnode->next=stack;
stack=newnode;
return stack;
}

link pop(link stack,int *value)
{
link top;
if(stack !=NULL)
{
top=stack;
stack=stack->next;
*value=top->data;
free(top);
return stack;
}
else
*value=-1;
}

int empty(link stack)
{
if(stack==NULL)
return 1;
else
return 0;

}

int is_operator(char operator)
{
switch (operator)
{
case '+': case '-': case '*': case '/': return 1;
default:return 0;
}
}

int priority(char operator)
{
switch(operator)
{
case '+': case '-' : return 1;
case '*': case '/' : return 2;
default: return 0;
}
}

int two_result(int operator,int operand1,int operand2)
{
switch(operator)
{
case '+':return(operand2+operand1);
case '-':return(operand2-operand1);
case '*':return(operand2*operand1);
case '/':return(operand2/operand1);
}
}

void main()
{
char expression[50];
int position=0;
int op=0;
int operand1=0;
int operand2=0;
int evaluate=0;

printf("\nPlease input the inorder expression:");
gets(expression);

while(expression[position]!='\0'&&expression[position]!='\n')
{
if(is_operator(expression[position]))
{
if(!empty(operator))
while(priority(expression[position])<= priority(operator->data)&&
!empty(operator))
{
operand=pop(operand,&operand1);
operand=pop(operand,&operand2);
operator=pop(operator,&op);
operand=push(operand,two_result(op,operand1,operand2));
}
operator=push(operator,expression[position]);
}
else
operand=push(operand,expression[position]-48);
position++;
}
while(!empty(operator))
{
operator=pop(operator,&op);
operand=pop(operand,&operand1);
operand=pop(operand,&operand2);

operand=push(operand,two_result(op,operand1,operand2));
}
operand=pop(operand,&evaluate);
printf("The expression [%s] result is '%d' ",expression,evaluate);
getch();
}

⑵ 用c语言编一个字符型计算器代码（只要求有加减乘除，并且能分清先后顺序的）

#include <stdio.h>
struct s_node
{
int data;
struct s_node *next;
};
typedef struct s_node s_list;
typedef s_list *link;
link operator=NULL;
link operand=NULL;
link push(link stack,int value)
{
link newnode;
newnode=(link) malloc(sizeof(s_list));
if(!newnode)
{
printf("\nMemory allocation failure!!!");
return NULL;
}
newnode->data=value;
newnode->next=stack;
stack=newnode;
return stack;
}
link pop(link stack,int *value)
{
link top;
if(stack !=NULL)
{
top=stack;
stack=stack->next;
*value=top->data;
free(top);
return stack;
}
else
*value=-1;
}
int empty(link stack)
{
if(stack==NULL)
return 1;
else
return 0;
}
int is_operator(char operator)
{
switch (operator)
{
case '+': case '-': case '*': case '/': return 1;
default:return 0;
}
}
int priority(char operator)
{
switch(operator)
{
case '+': case '-' : return 1;
case '*': case '/' : return 2;
default: return 0;
}
}
int two_result(int operator,int operand1,int operand2)
{
switch(operator)
{
case '+':return(operand2+operand1);
case '-':return(operand2-operand1);
case '*':return(operand2*operand1);
case '/':return(operand2/operand1);
}
}
void main()
{
char expression[50];
int position=0;
int op=0;
int operand1=0;
int operand2=0;
int evaluate=0;
printf("\nPlease input:\n");
gets(expression);
while(expression[position]!='\0'&&expression[position]!='\n')
{
if(is_operator(expression[position]))
{
if(!empty(operator))
while(priority(expression[position])<= priority(operator->data)&&
!empty(operator))
{
operand=pop(operand,&operand1);
operand=pop(operand,&operand2);
operator=pop(operator,&op);
operand=push(operand,two_result(op,operand1,operand2));
}
operator=push(operator,expression[position]);
}
else
operand=push(operand,expression[position]-48);
position++;
}
while(!empty(operator))
{
operator=pop(operator,&op);
operand=pop(operand,&operand1);
operand=pop(operand,&operand2);
operand=push(operand,two_result(op,operand1,operand2));
}
operand=pop(operand,&evaluate);
printf("The expression [%s] result is '%d' ",expression,evaluate);
getch();
}

⑶ 用C语言编写一个简单的计算器1

#include<stdio.h>
int main() {
double num1 = 0; //输入1
double num2 = 0; //输入2
char ch; //操作
double ret = 0; //结果 printf( "输入第一个数:" );
scanf( "%lf", &num1 );
printf( "输入第二个数:" );
scanf( "%lf", &num2 );
printf( "操作[+ - * /]:" );
getchar();
scanf( "%c", &ch ); switch( ch ) {
case '+':
ret = num1 + num2;
break;
case '-':
ret = num1 - num2;
break;
case '*':
ret = num1 * num2;
break;
case '/':
ret = num1 / num2;
break;
default:
break;
}
printf( "结果:%.2lf\n", ret ); return 0;
} 写个简单易懂的，你操作计算器的步骤就是编写程序的思路呀

⑷ 用C语言代码编写计算器

简单计算器实现：
#include<stdio.h>
int
main()
{
double
num1
=
0;
//输入1
double
num2
=
0;
//输入2
char
ch;
//操作
double
ret
=
0;
//结果
printf(
"输入第一个数:"
);
scanf(
"%lf",
&num1
);
printf(
"输入第二个数:"
);
scanf(
"%lf",
&num2
);

⑸ c语言编写“多功能计算器”的代码

#include<stdio.h>
#include<windows.h>
#include<math.h>
double
EPS=10E-6;
double
sum(double
a,double
b)
{
return
a+b;
}
double
sub(double
a,double
b)
{
return
a-b;
}
double
mul(double
a,double
b)
{
return
a*b;
}
double
divv(double
a,double
b)
{
return
a/b;
}
int
rem(int
a
,
int
b)
{
return
a%b;
}
int
addnumber(int
c,int
d)
{
int
sum=0;
for(int
i=c;i<=d;i++)
{
sum+=i;
}
return
sum;
}
int
factor(int
n)
{
int
f=1;
for(int
i=1;i<=n;i++)
{
f*=i;
}
return
f;
}
void
displaymenu()
{
printf("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
\n");
printf("*############高级计算器############*
\n");
printf("************************************
\n");
printf("*
①加法运算
*
\n");
printf("*
②减法运算
*
\n");
printf("*
③乘法运算
*
\n");
printf("*
④除法运算
*
\n");
printf("*
⑤取余运算
*
\n");
printf("*
⑥累加运算
*
\n");
printf("*
⑦阶乘运算
*
\n");
printf("*
⊙结束运算
*
\n");
printf("************************************
\n");
printf("************************************
\n");
}
void
main()
{
int
c,d;
/*用于做四则运算的两个数值的说明*/
double
a,b;
/*用来做累加函数的两个参数值的说明*/
int
intresult;
double
result;
/*用于保存表单运算中函数的返回值*/
int
choice;
displaymenu();/*保存用户选择项目菜单项*/
while(1)
{
printf("请选择你所进行运算项目的符号：");
scanf("%d",&choice);
switch(choice)
{
case
1:
/*加法计算*/
printf("请输入两个数字：");
scanf("%lf%lf",&a,&b);
result=sum(a,b);
printf("%lf+%lf的计算结果是：%lf\n",a,b,result);
break;
case
2:
/*减法计算*/
printf("请输入两个数字：");
scanf("%lf%lf",&a,&b);
result=sub(a,b);
printf("%lf-%lf的计算结果是：%lf\n",a,b,result);
break;
case
3:
/*乘法计算*/
printf("请输入两个数字：");
scanf("%lf%lf",&a,&b);
result=mul(a,b);
printf("%lf*%lf的计算结果是：%lf\n",a,b,result);
break;
case
4:
/*除法计算*/
{
scanf("%lf%lf",&a,&b);
if(b-0.0<EPS)
printf("数字错误\n");
else
{
printf("请输入两个数字：");
result=divv(a,b);
printf("%lf/%lf的计算结果是：%lf\n",a,b,result);
}
break;
}
case
5:
/*取余计算*/
printf("请输入两个数字：");
scanf("%d%d",&c,&d);
result=rem(c,d);
printf("%d
%
%d的计算结果是：%d\n",c,d,result);
break;
case
6:
/*累加计算*/
printf("请输入两个整数");
scanf("%d%d",&c,&d);
intresult=addnumber(c,d);
printf("%d-%d的累加计算结果是：%d\n",c,d,intresult);
break;
case
7:
//阶乘计算
{
printf("请输入一个大于0小于10的整数字");
scanf("%d",&c);
if(c<0||c>10)
{
printf("请输入一个大于0小于10的整数字，数据错误。\n");
break;
}
intresult=factor(c);
printf("%d的阶乘计算结果是：%d\n",c,intresult);
break;
}
case
0:
printf("谢谢使用。欢迎下次再用。\n");
return
;
default:
printf("选择错误，程序结束\n");
break;
}
}
}

⑹ 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[10];
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[50];
gets(str);
Infix(str);
=================================================================
哈哈！给分吧！

⑺ 用C语言编写计算器

#include <iostream.h>
void main()
{
int i;
cout<<"i"<<i++<<i--<<endl;
}
这个算不算.哈哈.

⑻ 求C语言编写的简单计算器程序，包括源代码，水平不要太高，简单就行。

这是我学C语言的第一个程序

加减乘除求余膜除登录验证

#include<stdio.h>

#include<math.h>

voidsub();//函数模块申明

voidadd();

voiddivide();

voidcf();

voidqy();

voidDisplayMenu();

voidpd();

voidlogin();

inta,pass;//共用函数，判断用

intmain()

{

system("titleC语言计算器-An");

login();

DisplayMenu();

while(1)//循环选择

pd();

return0;

}

voidpd()//判断所选功能

{

scanf_s("%d",&a);

if(a==0)exit(1);

if(a==1)add();

if(a==2)sub();

if(a==3)cf();

if(a==4)divide();

if(a==5)qy();

}

voidDisplayMenu()//菜单模块

{

printf("===================== ");

printf("：==计====算====器==： ");

printf("===================== ");

printf(": 1.加法 : ");

printf(": 2.减法 : ");

printf(": 3.乘法 : ");

printf(": 4.除法 : ");

printf(": 5.求余 : ");

printf(": 6.累加 : ");

printf(": 7.阶乘 : ");

printf(": 8.阶乘累加 : ");

printf("===================== ");

printf(": 0.退出 : ");

printf("===================== ");

printf("请选择菜单功能:");

}

voidadd()//加法模块

{

intnumber1,number2;

intsum;

printf("请输入两个数相加:");

scanf_s("%d%d",&number1,&number2);

sum=number1+number2;

printf("%d+%d=%d ",number1,number2,sum);

}

voidsub()//减法模块

{

intnumber1,number2;

intsub;

printf("请输入两个数相减：");

scanf_s("%d%d",&number1,&number2);//输入两个数

sub=number1-number2;

printf("%d-%d=%d ",number1,number2,sub);

}

voiddivide()//除法模块

{

intnumber1,number2;

floatquotient;

printf("请输入两个数相除:");

scanf_s("%d%d",&number1,&number2);

if(number2==0)

{

printf("数学语文老师教的啊，不知道除数不能为0吗！滚回去重写 ");

scanf_s("%d%d",&number1,&number2);

}

quotient=(float)number1/(float)number2;

printf("%d/%d=%5.1f ",number1,number2,quotient);

}

voidqy()//求余模块

{

intnumber1,number2;

printf("请输入两个数求余:");

scanf_s("%d%d",&number1,&number2);

printf("余数为:%d ",number1%number2);

}

voidcf()//乘法模块

{

intnumber1,number2;

intquotient;

printf("请输入两个数相乘:");

scanf_s("%d%d",&number1,&number2);

quotient=number1*number2;

printf("%d×%d=%d ",number1,number2,quotient);

}

voidlogin()//登录验证

{

printf("请输入密码 ");

scanf_s("%d",&pass);

if(pass==123465)

{

printf("验证成功，欢迎使用计算器系统 ");

}

else

{

printf("密码错误,请重新输入 ");

login();

}

}

⑼ c语言简易计算器代码！！急求大神帮助，好了给加分

#include <stdio.h>

int main()
{
int x = 0, y = 0;
char i ;
printf("请输入你要计算的方式:\n + - * / % \n");
scanf("%c",&i);
printf("输入两个数字，一个数字输入完成后按一次回车\n");
scanf("%d",&x);
scanf("%d",&y);
switch (i)
{
case '+':
printf("=%d\n",x+y);
break;
case '-':
printf("=%d\n",x-y);
break;
case '*':
printf("=%d\n",x*y);
break;
case '/':
printf("=%d\n",x/y);
break;
case '%':
printf("=%d\n",x%y);
break;
default:
printf("error!\n");
}
getchar();

return 0;
}