C/C++ Beginner's Guide and Post Basic Questions here
harshilsharma63
DIY FTW!
You can try 'head first' series if you are aware of basic programing concepts.
flyingcow
Shibe
id like to read a book explaining basics too, i saw let us c++ but the reviews stated that it was sh!t and gave wrong info
skeletor
Chosen of the Omnissiah
yup, the best book for beginners infact. It's a no nonsense book. Not a fancy one like Head First.
MelisaStewart
Right off the assembly line
I think above is a thread that actually suits the content of the same. Programming is nothing but a set of commands created by a developer which is then coded into the machine so that the machine performs a set of tasks depending on user inputs or independently. such a fine post it is.
nims11
BIOS Terminator
This statement is as abstract as "Mathematics is all about addition and subtraction"
vickybat
I am the night...I am...
Get this:
OBJECT ORIENTED PROGRAMMING IN C++ 4ED 4 Edition - Buy OBJECT ORIENTED PROGRAMMING IN C++ 4ED 4 Edition by Robert Lafore Online at Best Prices in India - Flipkart.com
May i know the compiler ua using?if ua using linux interface u can have the copy of the program by following steps:
1.from the editor press escape
2.then press shift+
colon)3.type wq then leave a space and give the new name to which u want to copy.
4.Press enter
now u can open the new file which has been copied.
ex: wq newname.cpp
aaruni
The Linux Guy
if-else ladder you mean? the deepest level in an if-else ladder?
because, I think there may be a limit in the if-else ladder, but otherwise, there may be infinite number of uses of if-else...
I didn't mean the if-else ladder. I just asked about the maximum number of uses of if-else in a program. I remember reading somewhere about the limit.
Since you pointed it out am also curious to know the deepest level in an if-else ladder.
okay, a new question in here.
I want to convert a decimal number to binary and store it in a string so that I can use that binary output for later computation. Here is what I did
Now as you can see that all the binary output is in a[] but how do I get it into a string so that I can use printf("%s",string) and get the binary output ?
I want to convert a decimal number to binary and store it in a string so that I can use that binary output for later computation. Here is what I did
Code:
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
void main()
{
int num; char i=0,j; char a[11]={0,0,0,0,0,0,0,0,0,0,'\0'};
char string[11];
printf("\nEnter the decimal number\n"); scanf("%d",&num);
while(num>0)
{
a[i]=num%2;
i++;
num=num/2;
}
printf("\nThe Binary equivalent is\n");
for(j=9;j>=0;j--)
{
printf("%d",a[j]);
}
}Now as you can see that all the binary output is in a[] but how do I get it into a string so that I can use printf("%s",string) and get the binary output ?
Neuron
Electronic.
The quickest way to do this is to add 48 to the contents of the int array to get the ascii equivalent char value of that digit. For example, '1' 's ascii value is 49. Add 48 to 1 and store it in the char array. Or you can use switch-case statements to individually put the ascii value of digits into arrays.
RBX
In the zone
[C++]
In a method, I have a pointer to a node, how do I set node to NULL using that pointer?
Also, can only use delete(), and not free().
Edit: Precisely, I need to delete root of tree, but when it's the last element, it doesn't work because tree's class always has a pointer to it.
Edit: In this root is accessible directly since it's in a friend class and I'm using iterative approach, so I just checked if it was root and a leaf and then set it to NULL.
In a method, I have a pointer to a node, how do I set node to NULL using that pointer?
Also, can only use delete(), and not free().
Edit: Precisely, I need to delete root of tree, but when it's the last element, it doesn't work because tree's class always has a pointer to it.
Edit: In this root is accessible directly since it's in a friend class and I'm using iterative approach, so I just checked if it was root and a leaf and then set it to NULL.
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rohitshubham
Ambassador of Buzz
i am sorry , i am not getting your question..are you making threaded tree? coz you're saying you root node always has a pointer to it;
BTW if you want to set the value NULL if method has been called by pointer to pointer(void abc(node **,int))then you could set the value of node such as tree_1 as NULL by using (*tree_1)->left=NULL ; which i guess is not the question you are asking.
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