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how can i use F1-F12 in switch case statement??

guys im using reverse polish notation in link list my problem is every time i enter the OPERATOR (+) it will add and that operator display as '0' im having trouble in that operator i need to display it as blank >_< help me guys #include<stdio.h> #include<stdlib.h> #include<string.h> #include<ctype.h> #define …

how can i make the condition if(isalpha(str)) always said that it is invalid conversion from char to int whenever i use if(isalpha(i)) does not print the "That is alpha" help me pls? #include <stdio.h> #include <stdlib.h> #include<ctype.h> #include<string.h> int main () { int i; char str[256]; printf ("Enter a number: …

how to compare str and the + sign LINE 15 please help me #include <stdio.h> #include <stdlib.h> #include<ctype.h> #include<string.h> int main () { int i; char str[256]; printf ("Enter a number: "); gets ( str ); i = atoi ( str ); if(isalpha(str[256])) { */if(strcmp(str,'+')==0) { printf("That is a plus …

Hi this is RPN i would like to ask why the free(after) does not remove the after..im still confuse but whenever i print the value of after it is the last node but when im trying to remove it doesn't. #include<stdio.h> #include<stdlib.h> #include<string.h> #include<ctype.h> #define p printf #define s scanf …

Why i always get the address of the number?? 2295367 >_< #include<stdio.h> #include<stdlib.h> #define p printf #define s scanf #include<ctype.h> struct node { int data; struct node *link; };typedef struct node *nodepointer; void push(nodepointer &top,int number) { nodepointer newnode,temp; newnode=(nodepointer)malloc(sizeof(struct node)); newnode->data=number; newnode->link=NULL; if(top==NULL) { top=newnode; } else { temp=top; …

how can i use reverse polish notation in link list using stack i need to reverse the numbers>_< #include<stdio.h> #include<stdlib.h> #define p printf #define s scanf struct node { int data; struct node *link; };typedef struct node *nodepointer; void push(nodepointer &top,int num) { nodepointer newnode; newnode=(nodepointer)malloc(sizeof(struct node)); newnode->data=num; newnode->link=top; top=newnode; …

Any idea how to make restrictions in link list. im still confuse what will i need to make restrictions?? i know the isdigit isalpha etc. for example i can only enter DIGIT,

im still confuse in RPN will i use insert at bottom of stack or front and then reverse it? cause my project say's that insert at the bottom of the stack..somebody help me pls

i need that every user input is character it will ask again to enter number until the user's input is correct.my program does not seems to apply the proper condition any help guys? #include<stdio.h> #include<stdlib.h> #define p printf #define s scanf #include<ctype.h> struct node { int data; struct node *link; …

How to add the numbers between nodes example. input 1*2+3 first 2 and 3 will add and it will become 1 5 nodes then 1 * 5 = 5 then node will becaome 5 only this is my sample program #include<stdio.h> #include<stdlib.h> #define p printf #define s scanf struct node …

How to add number in link list using stack POP AND PUSH example i have 1+ 2+3 input the last two operands will first do the addition example and it becomes 1 5 and i put + and will become 6 how? any idea?

How can i store strings in my program. #include<stdio.h> #include<stdlib.h> #include<string.h> #define p printf #define s scanf struct node { char nbook; struct node *next; }; typedef struct node *nodepointer; void addbook(nodepointer &head,char book) { nodepointer newnode; newnode=(nodepointer)malloc(sizeof(struct node)); newnode->nbook=book; newnode->next=head; head=newnode; } void display(nodepointer head) { if(head==NULL) { p("\nNothing …

As you can see this is my program.my problem is how to store strings in my program I can store only single character.. any one can help me? =( #include<stdio.h> #include<stdlib.h> #include<string.h> #define p printf #define s scanf struct node { char nbook; struct node *next; }; typedef struct node …

what is difference between char name[50] and char *name

can i return a value using CHAR DATA TYPE? NOT INT? ex.int data; int value(ex.data) return data; how about this ex.char name; int(ex.name) return name; possible or not?