كمك فوري

[mamalia89]

سلام،
يك برنامه مربوط به طراحي خانه هاي excel به وسيله زبان c دارم، لطفا اگر كسي مي دونه چطور مي شه توابع اون رو به توابع dynamic تبديل كرد كمك كنه ،نيازه فوري به اين دارم،تا فردا....
با تشكر

#include "stdio.h"
#include "conio.h"
#include "math.h"
#define M 21
struct stack{
int myTop;
char items[M];
};
void pusha(stack *s, float);
void popa(stack *s, float *);
int isDigit(char);
float evaluate(char []);
float operate(char, float, float);
void push(stack *s, char);
void pop(stack *s, char *);
int empty(stack *s);
void popAndTest(stack *s, char *x, int *underflow);
void topAndTest(stack *s, char *x, int *underflow);
int isOperand(char);
void convert(char[], char[]);
int pred(char, char);
//***********infix to postfix*************
int main()
{
char infix[M], postfix[M];
int i;
clrscr();
printf("Enter an infix expression:");
gets(infix);
convert(infix, postfix);
printf(" expression is:%2f", evaluate(postfix));
getch();
return 0;
}
//*****************
void convert(char infix[], char postfix[])
{
char symbol, topSymbol;
int underflow, i, j = 0;
stack s;
s.myTop = -1;
for(i = 0; infix[i]; i ++)
{
symbol = infix[i];
if(isOperand(symbol))
postfix[j++] = symbol;
else if(symbol == '(')
push(&s, symbol);
else if(symbol == ')')
{
pop(&s, &topSymbol);
while(topSymbol != '(')
{
postfix[j++] = topSymbol;
pop(&s, &topSymbol);
}//end of while
} //end of else if
else
{
topAndTest(&s, &topSymbol, &underflow);
//if op1 > op2 then true
if(empty(&s) || (!pred(topSymbol, symbol)))
push(&s, symbol);
else
{
popAndTest(&s, &topSymbol, &underflow);
while(pred(topSymbol, symbol) && !underflow)
{
postfix[j++] = topSymbol;
popAndTest(&s, &topSymbol, &underflow);
}
push(&s, symbol);
} //end of else
}//end of else
}//end of for
while(!empty(&s))
{
pop(&s, &topSymbol);
postfix[j++] = topSymbol;
}
postfix[j] = '\0';
}
//*****************
int isOperand(char symbol)
{
if(symbol >= '0' && symbol <= '9')
return 1;
return 0;
}
//***********************
void push(stack *s, char x)
{
s -> items[++(s -> myTop)] = x;
}
//*******************
void pop(stack *s, char *x)
{
*x = s -> items[(s -> myTop) --];
}
//*************************
void popAndTest(stack *s, char *x, int *underflow)
{
if(empty(s))
*underflow = 1;
else
{
*x = s -> items[(s -> myTop) --];
*underflow = 0;
}
}
//*******************
void topAndTest(stack *s, char *x, int *underflow)
{
if(empty(s))
*underflow = 1;
else
{
*x = s -> items[s -> myTop];
*underflow = 0;
}
}
//*****************
int empty(stack *s)
{
if(s -> myTop == -1)
return 1;
else
return 0;
}
//****************
int pred(char op1, char op2)
{
int i, p1, p2;
/* ( + - * / % */
static char op[] = {'(','s','c','t','q','+', '-', '*', '/','%','\0'};
static int isp[] = {0, 12, 12, 13, 13, 13};
for(i = 0; op[i]; i ++)
if(op[i] == op1)
{
p1 = i;
break;
}
for(i = 0; op[i]; i ++)
if(op[i] == op2)
{
p2 = i;
break;
}
if(isp[p1] >= isp[p2])
return 1;
return 0;
}

//********postfix*********************************** ***************
float evaluate(char postfix[])
{
float value, operand1, operand2;
char symbol;
stack s;
s.myTop = -1;
int i;
for(i = 0; postfix[i]; i++)
{
symbol = postfix[i];
if(isDigit(symbol))
push(&s, (float)(symbol - '0'));
else
{
popa(&s, &operand2);
popa(&s, &operand1);
value = operate(symbol, operand1, operand2);
pusha(&s, value);
}//end of else
}//end of for
popa(&s, &value);
return value;
}
//**************
int isDigit(char symbol)
{
return ((symbol >= '0') && (symbol <= '9'));
}
//**************
float operate(char symbol, float operand1, float operand2)
{
switch(symbol)
{
case '+':
return ((operand1) + (operand2));break;
case '-':
return ((operand1) - (operand2));break;
case '*':
return ((operand1) * (operand2));break;
case '/':
return ((operand1) / (operand2));break;
case 's':
return (sin(operand2));break;
case 'c':
return (cos (operand2));break;
case 't':
return (tan (operand2));break;
// case 'q':
// return ( (operand2));break;
}
defult :return 0;
}
//*******************
void pusha(stack *s, float x)
{
s -> items[++(s -> myTop)] = x;
}
//*******************
void popa(stack *s, float *x)
{
*x = s -> items[(s -> myTop) --];
}