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Printf() and printf as a variable
Can printf be used as a variable as well as a procedure?
sarav957
- Jul 10th, 2009
We can use printf as a variable and it is compiling GCC compiler This is my program which is having runtime and compiled successfully without any warning #include<stdio.h> int main( ) { ...
Jaya_Kaja
- Jul 18th, 2008
printf can be used as a variable . But once we declare a variable printf ,standard Library function "printf" can not be recongnized by the compiler within the sc...
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Would the following program compile? main() { int a=10,*j; void *k; j=k=&a; j++; k++; printf("n%u%u",j,k); }
A) YesB) No
abhimanipal
- Jul 29th, 2009
Test.c:10: error: invalid conversion from `void*' to `int*'test.c:12: error: ISO C++ forbids incrementing a pointer of type `void*'
aniljoo
- Feb 12th, 2007
No it will not work
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If the following program (myprog) is run from the command line as myprog friday tuesday sunday, What would be the output? main(int argc, char*argv[]) { printf("%c",**++argv); }
A) mB) fC) myprogD) friday
abhimanipal
- Jul 29th, 2009
Printf("%d",argv);this prints the address of the first argumentprintf("%s",*argv); this prints the first argument myprogprintf("%c",**++argv); this prints the first character of the first argumentNow if we use an increment operator before all this we get f as the final o/p.
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If the following program (myprog) is run from the command line as myprog friday tuesday sunday, What would be the output? main(int argc, char *argv[]) { printf("%c",*++argv[1]); }
A) rB) fC) mD) y
abhimanipal
- Jul 30th, 2009
I am sorry argv[1] is the address of the 2 character of the string pointed to by argv...So consequently the o/p is r and not f
abhimanipal
- Jul 30th, 2009
When we write argv[1] its the address of 1st character of the string pointed to by argvWhen we increment argv the address is of the the second string ie fridayWhen we write *++argv[1] its prints the 1st alphabet of the string friday
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How to convert Stack in to Queue and v varsa ? c with data structure.
abhimanipal
- Jul 30th, 2009
Converting queue to stack. This basically means make a First in first out structure a last in first out structure. This is done by adding items in reverse11<-21<-2<-31<-2<-3<-4The ot...
abhi1983
- Jun 26th, 2006
Had it been vice versa queue to stack it would have been done easily by keeping the front pointer fixed.Simply saying by having one more function in the implementation part.But if you want to have a q...
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Datatypes Justify Output
#includevoid main(){ float a=0.7; if(a
gauravmitbhu
- Jul 31st, 2009
#include<stdio.h>#include<conio.h>void main(voif){float a=0.9,b=0.9;double c=0.9;if(a<b)printf("yes for b");elseprintf("no for b");if(a<c)printf("nyes for c");elseprintf("nno for c");getch(); }Output: no for byes for c
shweta mathur
- Jun 6th, 2008
When a = 0.7internally compiler treats 0.7 as double. Now a is a float and float is always small then double so the if condition is true and answer will beYES
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What is a pragma?
The #pragma preprocessor directive allows each compiler to implement compiler-specific features that can be turned on and off with the #pragma statement. For instance, your compiler might support a feature called loop optimization. This feature can be invoked as a command-line option or as a #pragma directive. To implement this option using the #pragma directive, you would put the following line into...
soma praveen kumar
- Mar 29th, 2007
consider an examplestruct a{char a;int b;char c;};sizeof struct a is 12 instead of 6if we declare #pragma() Before struct aThen size will Be 6.
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Write a C program to check given string is palindrome or not using pointers?
aks3937
- Aug 24th, 2009
#include<stdio.h>#include<conio.h>void main(){int i,flag=0,k,l,m,n;char str[100];clrscr();printf("enter the string n");scanf("%s",str);l=strlen(str);printf("%d&quo...
baseersd
- Jan 7th, 2008
#include<stdio.h>int Ispalindrome(char* str){ int i,len; len = strlen(str); for(i = 0; i < len / 2; i++) { &...
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What is the heap?
The heap is where malloc(), calloc(), and realloc() get memory. Getting memory from the heap is much slower than getting it from the stack. On the other hand, the heap is much more flexible than the stack. Memory can be allocated at any time and deallocated in any order. Such memory isn’t deallocated automatically; you have to call free(). Recursive data structures are almost always implemented with...
psjetha
- Sep 1st, 2009
Heap is a dynamic memory of main memory. In main memory there are several type of memory management like fixed, static, dynamic (it is just memory area which can be used by any task or process but it ...
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Header File
Why should we use header file?
vigneshwaransankaran
- Sep 9th, 2009
#include<stdio.h> #include<conio.h> main() { int a,b,c,d; clrscr(); d=0; printf("enter a number"); scanf("%d",&a); c=a; while(a>0) b=a%10; d=d+(b*b*b...
rkanna
- Dec 22nd, 2008
for example...we should include the header file (Ex: #include<stdio.h>) before the main function. because if we are going to use following function in our program we should inclu...
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Hello World
Write a program in C to display output as "hello world" without using semicolon(;)?
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Write sample code or algorithim to get all possible combinations of data that will be entered from keyboard
like, If i enter 1 2 3 then it should show 1 2 31 3 2 2 1 3 All 6 possible combnations
jv500
- Sep 13th, 2009
#include <stdio.h>#include <stdlib.h>#include <string.h>/* Program to print all combinations of an input */char *globalPtr;void swap (char *a, char *b){char t = *a; ...
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How will you find the number of leaf nodes in a tree
shashankjo
- Oct 2nd, 2009
int count=0; // global variable int inorder(NODE *root) { if(root!=NULL) ...
Atul Mehra
- Nov 15th, 2006
FindLeafNodes(Tree *root){ if (root->left == NULL && root->right == NULL) return 1;else return (FindLeafNodes(root->left) + FindLeafNodes(root->right))}
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How can send unlimited no of arguments to a function, eg printf function can take any no of arguments
priyapa
- Nov 15th, 2005
Using va_list variables in stdarg.h headerfile
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If the program (myprog) is run from the command line as myprog 1 2 3 , What would be the output? main(int argc, char *argv[]) { int i; for(i=0;i<argc;i++) printf("%s",argv[i]); }
A) 1 2 3B) C:MYPROG.EXE123C) MYPD) None of the above
sunilkanna
- Oct 21st, 2009
The answer is b. because command line argument includes file path as first argument.
prabhjots
- Feb 6th, 2008
The result will bec:mypgm.exe123becoz argv[0] will be the location of ur program(be it c: or d:)
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TSR
Explain How Terminate & Stay Resident (TSR) and Offline programming differ from one another.
Fossila
- Dec 6th, 2009
TSR stands for Terminate- and Stay-Resident programs.TSR are programs which get loaded in memory and remain or stay there (resident) in memory permanently. They will be removed only when the computer ...
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Identify the in correct expressionA. a=b=3=4B. a=b=c=d=0C. float a=int b= 3.5D. int a; floatb; a=b=3.5;
anon1987
- Dec 7th, 2009
Ans: D int a ; float , a=b=3.5 ; is a compound statement with necessary " ; "
chandravathi
- Dec 25th, 2005
A is incorrect. as the assignment takes place from right to left, first 3 is assigned a value of 4, which will give an error.
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A=0;while(a<5)printf("%d ",a++);how many times does the loop occurs?a.infiniteb.5c.4d.6
A
rajeshmeena21
- Dec 11th, 2009
Correct answer is 5 times.Starting from a=0,1,2,3,4 but not 5 so in total 5 times.
avula tirupathi rao
- May 7th, 2005
Answer is 5 times
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Execute Shell Command
How will you execute shell command without using system command in C-language? Write a program to execute ls -l and redirect the output to a file, without using system command ?
nicety123
- Dec 20th, 2009
#include <unistd.h>int ret;...ret = execl ("/bin/ls", "ls", "-1", (char *)0);
phanirvcse
- Apr 1st, 2009
You can use exec family of system calls to get the job done. Its a nice experience, go ahead and explore it.
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You have a link list. How can you tell whether there is a cycling in it?
santhigkinterview
- Jan 16th, 2008
Take 2 pointer. increment 1 pointer once and another pointer twice. keep incrementing unless pointer2 is NULL or when pointer 1 and pointer 2 are equal. When...
C Interview Questions
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