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}
}
">Main(){ signed int bit=512, mBit; { mBit = ~bit; bit = bit & ~bit ; printf("%d %d", bit, mBit); }}
A) 0, -513B) 512, 0C) 0, 513D) 0, 0
abhimanipal
- Jan 28th, 2010
Answer is A. This is how I reason it outmBit contains the inverse of bit. All the 1's in bit become 0 and all the 0's in bit become 1. 512 is positive so the result of this inverse has to be a -ve num...
louis
- Mar 29th, 2006
Two's complement:00000000000000001111111111111111 "Not operation" ->11111111111111110000000000000000 assign to int, since highest position is 1, then Not operation again, ->10000000000000001111111111111111, then plus 1->10000000000000010000000000000000, it is - 513
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We should not read after a write to a file without an intervening call to fflush(), fseek() or rewind()
A) TrueB) False
sunil
- Mar 1st, 2013
A) True
dasam
- Mar 30th, 2007
We cannot read the data using fread() function that was written in to file using fwrite() function. This is so beacause the file pointer (FILE* fp) that was passed as the argument of the fread() funct...
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Following declarations are sameconst char *s; char const *s;
A) TrueB) False
mihir_void
- Mar 5th, 2009
No, the declarations are not same Let us take see each one of them1. const char *s; Here the char is constant hence const char *s="hello" ; //alloweds[3]='o' ;//error as char is constants="bye";//thi...
kiranck007
- Jan 27th, 2006
i am sorry....actually there is no difference b/w const char *s;andchar const *s;but there is a difference b/w above two and and the below oneThe first two are interchangeable; they declare a pointer ...
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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 do you write a C program which can calculate lines of code but not counting comments?
gpreddy
- Nov 8th, 2006
working code ************************#includemain(){ FILE *f; char ch;int c=0; f=fopen("reddy", "r"); ch=fgetc(f); while(!feof(f)) { switch(ch)...
venkatesh
- May 19th, 2006
main(){FILE f=open a file in readmodechar ch;int c=0;ch=fgetc(f);while(!feof(f)){switch(ch){case "/" : if (fgetc(f)=="*") while (fgetc(f)!="*" and fgetc(f)!="/");break; ca...
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C program for delete a node from linked list
oly
- Sep 14th, 2014
What is the program for delete a list in an linked list?
Sukumar Paul
- Aug 1st, 2010
yaa i am writing the full program here for better understanding:This program will be run on Turbo C++ 3.0 without any error or warning. "c #include #include //Declaring node of li...
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How to break cycle in circular single link list?
Sukumar Paul
- Aug 1st, 2010
There is a very wellknown algorithm (created by Robert W. Floyd).This algorithm is called Floyd's cycle finding algorithm.It uses 2 pointers moving at different speeds to walk the linked list. Onc...
alley
- Jul 2nd, 2007
There's an algorithm called Floyd-cycle finding algorithm.Briefly, start from a node and traverse the list in steps of one and two using two pointers. Eventually, both the pointers will coincide if there exists a cycle in the linked list.
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strcat(buf,buf);
printf(buf);
}
While executing this in VC++ I do not get an output . Looks like the program runs into an infinite loop. But while executing the same in Turbo C I get the output as "hellohelloh". What could be the reason behind this difference in output?">Consider the following program segment :#include #include void main () { char buf[100] = "hello"; strcat(buf,buf); printf(buf);}While executing this in VC++ I do not get an output . Looks like the program runs into an infinite loop. But while executing the same in Turbo C I get the output as "hellohelloh". What could be the reason behind this difference in output?
jbode
- Jul 6th, 2010
As kbjarneson pointed out, the problem is that you are clobbering the 0 terminator of the input string; once that happens, strcat() doesn't know where to stop. His solution is to use memmove...
kbjarnason
- Jul 2nd, 2010
Consider how strcat might be written:strcat( char *dst, char *src ){ /* Find end of string */ while ( *dst ) dst++; while ...
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Struct out {struct in{ char c;int d;}s1,*p1;}a1, *pa1;pa1 = &a1;a1.p1 = &s1;Which is incorrect?a. a1.p1->c b. pa1->p1->c c. a1->p1 d. a1.s1.c
naresh
- Feb 22nd, 2007
Hi frns the above one ans is cbecause a1 can hold only the value of s1 but not its address value........abd more over p1 cant be hold by a1 so the a1 cant become pointer to p1
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How many times fork() function is executed
Main(){ if(fork()||fork()) return fork(); else return 0;}how many times fork() function is executed?
geekeeg
- Jun 30th, 2010
4 times.Main threadfork() fork() /* In Child process second fork call */ &n...
suhaas.kaul
- Feb 4th, 2009
fork f1 = 1 will return f3;fork f1 = 0, f2 = 1 return f3;f1 = 0, f2 = 0 return 0;in all 7 times;
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Write code sample for string reversal program in c by using for loop and using only one buffer
jbode
- Dec 14th, 2011
Below is a simple, straightforward, maybe not the fastest method for reversing a string in place. Why not start j at strlen(str) - 1? If the string is empty, strlen will return 0, and since size_t...
shiva
- Sep 27th, 2011
We can use directly strrev ()
Code- #include <string.h>
- #include <stdio.h>
- "string""Before strrev(): %s
- ""After strrev(): %s
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Pointer to an Array
What is pointer to an array? Explain with example.
jbode
- Oct 5th, 2010
For any given data type T, a pointer to an array of T is declared as "T (*arr)[N];". It has the same value as a pointer to the first element of the array, but a different type (T (*)[N...
anandkumarjha
- Aug 28th, 2010
Actually there does not exist array rather here is a term called pointer to an array.let me explain with the help of one example.suppose we have following code#include<stdio.h>#define i 10main()...
When should a type cast not be used?
A type cast should not be used to override a const or volatile declaration. Overriding these type modifiers can cause the program to fail to run correctly. A type cast should not be used to turn a pointer to one type of structure or data type into another. In the rare events in which this action is beneficial, using a union to hold the values makes the programmer’s intentions clearer.
kbjarnason
- Jul 2nd, 2010
And it should never, ever, EVER be used to cast the return from malloc, at least in C (and if you're using C++, why are you using malloc?)
shivakumara.madegowda
- Mar 20th, 2007
We should not cast the big datatype to smaller one. Like from double to float long to integer. TIn these cases there will be chance of loosing the valuable data itself.
What is the quickest sorting method to use?
The answer depends on what you mean by quickest. For most sorting problems, it just doesn’t matter how quick the sort is because it is done infrequently or other operations take significantly more time anyway. Even in cases in which sorting speed is of the essence, there is no one answer. It depends on not only the size and nature of the data, but also the likely order. No algorithm is best in all...
kbjarnason
- Jul 2nd, 2010
One should point out that quicksort can, on some data sets, degenerate to an O(n^2) sort - meaning the next ice age may arrive before your sort finishes. There is, kicking around on the net some...
agni_suresh896
- Apr 19th, 2007
The algorithms which follows divide and qunquer technique provides fastest implementation.
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.
How do you print only part of a string?
/* Use printf() to print the first 11 characters of source_str. */ printf(“First 11 characters: ‘%11.11s’n”, source_str);
abhimanipal
- Aug 21st, 2009
You can also print it using pointers....Try this following code segment ... This does the trick. char str[]="The Sky is Blue and so are you";char *s1= &str[5];printf("%sn",s1);
What is a void pointer?
A void pointer is a C convention for “a raw address.” The compiler has no idea what type of object a void Pointer “really points to.” If you write int *ip; ip points to an int. If you write void *p; p doesn’t point to a void! In C and C++, any time you need a void pointer, you can use another pointer type. For example, if you have a char*, you can pass it to a function that expects a void*. You don’t...
Ans