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C if condition Puzzle
What's the "condition" so that the following codesnippet prints both HelloWorld !if "condition"printf ("Hello");elseprintf("World");
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Editorial / Best Answer
kiranb_rvce- Member Since Jun-2008 | Jun 6th, 2008
if ( ! ( printf("Hello ") ) )
printf("Hello");
else
printf("World");
Florian F
- Nov 17th, 2017
Condition can be empty
Code- #include <stdio.h>
- #define printf(s) (!printf(s))
- "Hello ""world!
- ");
- }
fazil.vp
- Apr 24th, 2009
/* Solution 1: */int main(int argc, char* argv[]){ if( argc == 2 || main( 2, NULL ) ) { printf("Hello "); } else { printf("Worldn"); } return 0;}/* Solution 2 (Only for Unix an...
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Accenture C Questions
1)Write a C program to find a peculiar two digit number which is three times the sum of its digits.2) Bacteria are known to multiply very rapidly. If a certain container contains just one bacterium on the first day and there are twice as many on the next day. In this manner the number of bacteria in the container doubles itself everyday. Assuming that the container would be full on the 10th day with...
krischan
- Nov 23rd, 2010
1)Write a C program to find a peculiar two digit number which is three times the sum of its digits.#include<stdio.h>void main(){int i=0,x,y;clrscr();for(i=10;i<=99;i++){x=i/10;y=i%10;if(i==(x...
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Memory Stack or Heap
Which type of memory(stack or heap)is used by static and external variables?
kbjarnason
- Jul 1st, 2010
Since C has no concept of "stack", the question of whether stack or heap memory is used seems a bit unclear.Static variables come in two distinct flavours: file scope and block scope. ...
niyas15
- Mar 2nd, 2010
The static variable is stored at data section and local variables are stored at stack and dynamic allocation of data are strored at heep
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Array is an lvalue or not?
An lvalue was defined as an expression to which a value can be assigned. Is an array an expression to which we can assign a value? The answer to this question is no, because an array is composed of several separate array elements that cannot be treated as a whole for assignment purposes. The following statement is therefore illegal: int x[5], y[5]; x = y; Additionally, you might want to copy the whole...
adarshjoshi
- May 12th, 2011
An object is a region of storage that can be examined and stored into. An lvalue is an expression that refers to such an object. An lvalue does not necessarily permit modification ...
jbode
- Nov 30th, 2010
Per the C Language Standard (hoping the posting software doesn't munge the following so that it's completely unreadable): ---------------------6.3.2.1 Lvalues, arrays, and function desig...
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What is a static function?
A static function is a function whose scope is limited to the current source file. Scope refers to the visibility of a function or variable. If the function or variable is visible outside of the current source file, it is said to have global, or external, scope. If the function or variable is not visible outside of the current source file, it is said to have local, or static, scope.
srini.embsys
- Dec 25th, 2007
With in the module it will comes upto end of the program.we can't access in another module.Number of functions it can access the static variable and sustaining that variable value.It can be declared as Local and Global.
i_spy
- Dec 25th, 2007
Suppose void a(){} is defined in file1.c. If you declare it extern in file2.c then you can use it in file2.c. So its scope in not within file1.c. But if you declare it as static in file1.c then it can not be used in any other file.
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What is the purpose of main( ) function?
The function main( ) invokes other functions within it.It is the first function to be called when the program starts execution.Ø It is the starting functionØ It returns an int value to the environment that called the programØ Recursive call is allowed for main( ) also.Ø It is a user-defined...
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Between a long pointer and a char pointer , which one consumes more memory? explain
kbjarnason
- Jul 2nd, 2010
As a general rule of thumb, object pointers (as opposed to function pointers) will typically be the same size, as the relevant information - memory address - requires the same size regardless of type....
abhimanipal
- Jul 20th, 2009
I am sorry the 2 part of the above answer is wrong..... I confused long pointer with far pointerSIze of long pointer and char pointer will be the same
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A Program that does nothing
Write a program in C that does nothing not even takes memory?
kbjarnason
- Jul 1st, 2010
I suspect it is impossible to write a C program which "takes no memory", unless one rewrites the startup code for the implementation.For example, argv[0] is the "program name", whi...
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p[0] = 'H';
printf("%s", p);
}
">Main(){ char *p = "hello world"; p[0] = 'H'; printf("%s", p);}
A) Compile errorB) “Hello world”C) Runtime error.D) “hello world”
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How we print alphabets using while loop?
sivaraju.sateesh
- Jul 20th, 2010
#include<stdio.h>main(){int i=65;while(i<123){if(i<91||i>96)printf("%c",i);i++;}}
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*ptr++;
printf("%sn",ptr);
ptr++;
printf("%sn",ptr);
}
explain difference between *ptr++ and ptr++">Find the output for the following C programmain(){char *ptr = "Ramco Systems";*ptr++;printf("%sn",ptr);ptr++;printf("%sn",ptr);}explain difference between *ptr++ and ptr++
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C program to count numbers of positive and negative numbers
Write a C program using arrays to count the numbers of positive and negative numbers which accepts the inputs as "size of the array" & "elements of the array" and outputs as "number of negative numbers in an array are" & "numbers of positive numbers in an array are" ?
shweta gupta
- Jun 25th, 2014
Code- #include<iostream>
- #include<stdio.h>
- "enter the size of array""enter element of a["<<i<<"]=""total negative numbers "<<count_neg<<" and positive number is "
asdasda
- Aug 11th, 2013
Code- #include<conio.h>
- #include<iostream>
- "How many values: ""Enter value "<<a<<": "
What will be difference b/w 5th and 6th statements?
1. #define MAX 1002. main()3. {4. int max=100;5. int a[MAX];6. int b[max];7. }
jbode
- Jul 6th, 2010
Line 6 defines a variable-length array, which is only valid for C99 or later. The size of a VLA is not known until runtime, they may not declared static or extern, and only ordinary identifiers ...
kbjarnason
- Jul 1st, 2010
In C99, the differences are that b is defined, rather than a, and that b is a variable-length-array rather than a conventional array.In C90, the sixth line is an error, as C90 does not support VLAs.
Garbage Value
In C if a variable is not assigned a value then why does it take garbage value?
Write the equivalent expression for x%8?
x&7 Write expressions to swap two integers without using a temporary variable?
Write a program to reverse a linked list
samCPP
- Dec 5th, 2011
Reversing a Linked list using temporary pointer "c #include #include using namespace std; template < class T > struct node { int element; node < T > *next; node() { ...
ankit srivastava
- Oct 17th, 2011
public void ReverseLinkedList (LinkedList linkedList) { // ------------------------------------------------------------ // Create a new linked list and add all items of given // linked list to the co...
What is the type of the variable b in the following declaration? #define FLOATPTR float* FLOATPTR a,b; a) float b) float pointer c) int d) int pointer
shivprasad
- Nov 2nd, 2012
B) float pointer
jbode
- Oct 29th, 2012
B is a plain float.
FLOATPTR a,b; expands to float* a,b;, which is *parsed* as float (*a),b;. The * is bound to the declarator, not the type specifier, so only a is declared as a pointer to float.char *b = "World";
clrscr();
printf("%s", strcat(a,b));
}
">Main(){ char *a = "Hello "; char *b = "World";clrscr(); printf("%s", strcat(a,b));}
A) HelloWorldB) Hello WorldC) HelloD) None of the above
pratikgotal
- Apr 2nd, 2010
I think segmentation fault error is dependent on the operating system you are using. I think if you run the code in Windows it will not give any error while when you run the same code in UNIX you will gate segmentation fault.
abhimanipal
- Jul 22nd, 2009
It will give a sementation faultThe pointer a is allocated just sufficient space to accomodate "Hello". When we add beyond that it will give a seg fault
printf("%d, %d ", j++ , ++i);
}
">Main(){ int i =10, j = 20; clrscr(); printf("%d, %d, ", j-- , --i); printf("%d, %d ", j++ , ++i);}
A) 20, 9, 19, 10B) 20, 9, 20, 10C) 20, 10, 20, 10D) 19, 9, 20, 10
abhimanipal
- Jan 28th, 2010
The O/P in this question is not compiler dependant. The language specification of C clearly states that the arguments to the function are supposed to be passed from right to left. So irrespective of the compiler there should be only 1 answer20, 9, 19, 10
sittoop
- Feb 26th, 2009
This is supposed to be same in both C and C++. According to ISO ANSII standard the answer to this is "undefined".
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