Dear All,
Please help me regarding these C++ Questions.
Q.1
Write a program using malloc function. In which you take input from user and allocate memory equal to square of this number. Which multiply numbers and draw a table in the following format?
Hint: User enters 3 then program allocates equal to 9 integer memories.
Output:1
Enter a single digit number:
2
The multiplication table of 2 is:
1 2

1 1 2
2 2 4
Output:2
Enter a single digit number:
4
The multiplication table of 4 is:
1 2 3 4

1 1 2 3 4
2 2 4 6 8
3 3 6 9 12
4 4 8 12 16
Q.2
Write a macros in which swap two number without using 3rd variable and then call
Macro in main function.
Hint: a=4, b=2 after swapping a=2, b=4.
2 Replies  1168 Views  Last Post: 04 June 2007  02:09 AM
Replies To: Question in C++
#2
Re: Question in C++
Posted 04 June 2007  01:10 AM
Well It is expected that you show your efforts taken on the problem and then we help you if there is any problem.
still here is a starter for you
Q. 1 Allocating memory will not be a big deal for you as it is a malloc function and you can get it's syntax easily.
now about multiplication table. That is also not too difficult.
Logic would be :
Run a for loop from 1 to n [considering n as user input].
inside this loop have another loop which calculates tables.
something like this :
if you want to store this numbers into the memory you just now allocated then just remove that printf and put your variable there.
Q. 2 This was quite straightforward so here is the macro
still here is a starter for you
Q. 1 Allocating memory will not be a big deal for you as it is a malloc function and you can get it's syntax easily.
now about multiplication table. That is also not too difficult.
Logic would be :
Run a for loop from 1 to n [considering n as user input].
inside this loop have another loop which calculates tables.
something like this :
for(i=1; i<=n; i++) { for(j=1;j<=n;j++) { printf("%d ",(i*j)); } }
if you want to store this numbers into the memory you just now allocated then just remove that printf and put your variable there.
Q. 2 This was quite straightforward so here is the macro
#define SWAP(a,b) { a=a+b; b=ab; a=ab; }
#3
Re: Question in C++
Posted 04 June 2007  02:09 AM
You should not answer his questions by doing his homework while he showed no effort at all. Its not helping him, and its bad for the forum too.
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