What are pointers?

C Programming Language > Pointer in C Language > Pointer in C

Short Question

774

Answer:

Pointers point to specific areas in the memory. Pointers contain the address of a variable, which in turn may contain a value or even an address to another memory.

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Related Program List

480. Can you pass an entire structure to functions?

Answer: Yes, it is possible to pass an entire structure to a function in a call by method style. However, some programmers prefer declaring the structure globally, then pass a variable of that structure type to a function. This method helps maintain consistency and uniformity in terms of argument type.

# Tutorial: Function in C

Question: Function in C Language Short

481. What is gets() function?

Answer: The gets() function allows a full line data entry from the user. When the user presses the enter key to end the input, the entire line of characters is stored to a string variable. Note that the enter key is not included in the variable, but instead a null terminator is placed after the last character.

# Tutorial: Function in C

Question: Function in C Language Short

482. How do you search data in a data file using random access method?

Answer: Use the fseek() function to perform random access input/ouput on a file. After the file was opened by the fopen() function, the fseek would require three parameters to work: a file pointer to the file, the number of bytes to search, and the point of origin in the file.

# Tutorial: Function in C

Question: Function in C Language Short

483. Are comments included during the compilation stage and placed in the EXE file as well?

Answer: No, comments that were encountered by the compiler are disregarded. Comments are mostly for the guidance of the programmer only and do not have any other significant use in the program functionality.

# Tutorial: Introduction to File

Question: File Input/Output Short

484. Is there a built-in function in C that can be used for sorting data?

Answer: Yes, use the qsort() function. It is also possible to create user defined functions for sorting, such as those based on the balloon sort and bubble sort algorithm.

# Tutorial: Function in C

Question: Function in C Language Short

485. How do you convert strings to numbers in C?

Answer: You can write you own functions to do string to number conversions, or instead use C

# Tutorial: Introduction to String

Question: String in C Language Short

486. What is the use of a semicolon (;) at the end of every program statement?

Answer: It has to do with the parsing process and compilation of the code. A semicolon acts as a delimiter, so that the compiler knows where each statement ends, and can proceed to divide the statement into smaller elements for syntax checking.

# Tutorial: Basic Structure of C Programming

Question: Overview of C Language Short

487. What is Blocks and Scope in c ?

Answer:

C is a block-structured language. Blocks are delimited by { and}. Every block can have its own local variables. Blocks can be defined wherever a C statement could be used. No semi-colon is required after the closing brace of a block.

Code:


#include<stdio.h>
#define semicolon ;
void main() 
{
 
  int a = 5;
  printf("\n%d", a);
  
  {
  int  a = 2;
  printf("\n%d", a);
  }
 
	
}

Output:

5
2Press any key to continue . . .

Reference to a variable will be to the variable of that name in the nearest enclosing block.

# Tutorial: Variable types and Scope in C

Question: Variable in C Language Short

488. What is Variable Storage Classes?

# Tutorial: Variable types and Scope in C

Question: Variable in C Language Long

489. How will you print "Hello World" without semicolon in c programming Language?

Answer: You can use this below two code Code 1:

#include
int main(void)
{
 switch(printf("Hello World 
"));
}

Code 2:

#include
int main(void)
{
 switch(printf("Hello World 
")){}
}

Output

Hello World
Press any key to continue . . .

# Tutorial: switch case

Question: Decision Making of C Language Short

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