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

C Programming Language > Function in C Language > Function in C

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2253

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.

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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.

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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.

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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

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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.

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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.

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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 . . .

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Question: Decision Making of C Language Short

490. 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

491. How will you print "Hello World" without semicolon in c programming Language using #define?

Answer: You can Write the below code for that

code

#include
#define semicolon ;
void main()
{
 printf("Hello World 
")semicolon
}

code

Hello World
Press any key to continue . . .

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