void main()
{
clrscr();
char infix[40];
puts("\nenter the infix expression :");
gets(infix);
intopost(infix);
getch();
}
int main()
{ char infix[100],postfix[100];
clrscr();
printf("\nenter the infix expression");
gets(infix);
strcpy(postfix,"");
intopost(infix,postfix);
printf("\n the postfix expression");
puts(postfix);
getch();
return 0;
}
int main(){
int result=0;
int top=-1;
int x=0;
printf("Enter the expression to be evaluated");
scanf("%s",infix);
printf("enter the value of variable");
scanf("%d",&x);
intopost(x);
result=eval(x);
printf("%d",result);
}
int main()
{
STK s;
int cs,ans;
char str[MAX],pre[MAX],post[MAX];
do /*Using Do-while Loop*/
{
//clrscr();
printf("-----Program for Expressions-----");
printf("Input The String:");
printf("MENU:");
printf("1.Infix to Prefix");
printf("2.Infix to Postfix");
printf("3.Exit");
cs=getche();
switch(cs) /*Using Switch Case*/
{
case '1':
intopre(str,pre);
break;
case '2':
intopost(str,post);
break;
case '3':
break;
default:
printf("Enter a Valid Choise!"); /*Default Case*/
break;
}
printf("Do you wish to Continue?(y/n)");
ans=getche();
}while(ans=='y'||ans=='Y'); /*Condition for Do-while loop*/
getch();
return 0;
}
