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return 0;
}">What would be the output of this program & Why#include#define one two#define two oneint main(){ int one=1,two=2; printf("%d%d",one,two); return 0;}
baseersd
- Jul 19th, 2007
This is the original code....#include#define one two#define two oneint main(){//int one=1,two=2; /*The above statement can be written as the following two statements for a better understanding */int o...
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Can a file other than a .h file be included with #include?
The preprocessor will include whatever file you specify in your #include statement. Therefore, if you have the line #include <macros.inc> in your program, the file macros.inc will be included in your precompiled program. It is, however, unusual programming practice to put any file that does not have a .h or .hpp extension in an #include statement. You should always put a .h extension on...
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Can the sizeof operator be used to tell the size of an array passed to a function?
No. There’s no way to tell, at runtime, how many elements are in an array parameter just by looking at the array parameter itself. Remember, passing an array to a function is exactly the same as passing a pointer to the first element.
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How can I convert a string to a number?
The standard C library provides several functions for converting strings to numbers of all formats (integers, longs, floats, and so on) and vice versa. The following functions can be used to convert strings to numbers: Function Name Purpose atof() Converts a string to a double-precision floating-point value. atoi() Converts a string to an integer. atol() Converts a string to a long integer....
rasmiranjanbabu
- Jul 5th, 2007
/*Let take an example*/main(){char rasmi="111";int ranjan;ranjan=atoi(rasmi);printf("n This is Rasmi Ranjan Nayak's Reply %d n", ranjan);}
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Write a program that will print out all the possible combinations of the charecters present in the given string.for example:monu,numo,nmou etc.
disha
- Jun 30th, 2007
void swap(char * arrIn, const int index1, const int index2){ char tmp=arrIn[index1]; arrIn[index1] = arrIn[index2]; arrIn[index2] = tmp;}void perm...
vipin gupta
- Oct 16th, 2006
Hello, See the code below:#include#includeusing namespace std;void permute(char *str, int location) { if(location == strlen(str)-1) { cout
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What would be the output of the following program? main() { int i=4; switch(i) { default: printf("n A mouse is an elephant built by the Japanese"); case 1: printf(" Breeding rabbits is a hair raising experience"); break; case 2: printf("n Friction is a drag"); break; case 3: printf("n If practice make perfect, then nobody's perfect"); } }
A) a) A mouse is an elephant built by the Japanese B) b) Breeding rabbits is a hare raising experience C) c) A mouse is an elephant built by the Japanese Breeding rabbits is a hare raising experienceD) d) None of the above
Jialun
- Jun 27th, 2007
Ans should be A+B because there is no break; at the end of default section which will lead the program flow into the first case till the break;
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What is the stack?
The stack is where all the functions’ local (auto) variables are created. The stack also contains some information used to call and return from functions. A “stack trace” is a list of which functions have been called, based on this information. When you start using a debugger, one of the first things you should learn is how to get a stack trace. The stack is very inflexible about allocating memory;...
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What is hashing?
To hash means to grind up, and that’s essentially what hashing is all about. The heart of a hashing algorithm is a hash function that takes your nice, neat data and grinds it into some random-looking integer. The idea behind hashing is that some data either has no inherent ordering (such as images) or is expensive to compare (such as images). If the data has no inherent ordering, you can’t perform...
neverd
- Jun 9th, 2007
Hash is actually using a maping function to map the items to keys, if two different items map to one key, a collision solution is needed.
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What is the benefit of using const for declaring constants?
The benefit of using the const keyword is that the compiler might be able to make optimizations based on the knowledge that the value of the variable will not change. In addition, the compiler will try to ensure that the values won’t be changed inadvertently. Of course, the same benefits apply to #defined constants. The reason to use const rather than #define to define a constant is that a const variable...
hurdjg
- May 30th, 2007
A side effect benefit:Say you want to pass an argument that you do not want modified, but you do not want to pass by value.Solution pass as constant reference or pointer constant...
hurdjg
- May 30th, 2007
A side effect benefit:Say you want to pass an argument that you do not want modified, but you do not want to pass by value.Solution pass as constant reference or pointer constant...
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What is the difference between the function pointer and pointer to a function
Robert
- May 8th, 2007
Pointers to functions concept is used in C programming language in various instances. One of the common instance in which programmers use pointers to function concept is for passing pointers to a func...
sripri
- May 8th, 2007
Function pointers are actually pointers. The address of a function gets pointed to by function pointer.Example of defining a function pointer is as below:int (*exforsys)(int,float)= NULL;
C Interview Questions
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