strcoll() function in c with example program

strcoll() in c is a library function use to compares string str1 to str2 and result will depends on  result is the LC_COLLATE setting of the location.

Syntax for strcoll() in c

int strcoll(const char *str1, const char *str2)

Parameters for strcoll():-

str1 & str2 are two Parameters which is going to use for strcoll() function in c.

Read more :- Arc function in C with graphics in c

 

Return Value :-

if return value is  < 0 then it indicates that str1 is less than str2 or Return value > 0 then it indicates that str2 is less than str1 and the last one Return value = 0 than str1 is equal to str2.

Example program for strcoll() in c

#include <stdio.h>
#include <string.h>

int main () {
   char str1[15];
   char str2[15];
   int ret;

   strcpy(str1, "abc");
   strcpy(str2, "ABC");

   ret = strcoll(str1, str2);

   if(ret > 0) {
      printf("str1 is less than str2");
   } else if(ret < 0) {
      printf("str2 is less than str1");
   } else {
      printf("str1 is equal to str2");
   }
   
   return(0);
}

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Example program for isxdigit() function in c

 The isxdigit() function in c programming checks whether a character is a hexadecimal digit character (0-9, a-f, A-F) or not.

Syntax for isxdigit in c :-

int isxdigit( int arg );

 isxdigit() Parameters

The isxdigit() in c takes a single character as it's parameter.

 C isxdigit() Return Value

 if passed argument is an hexadecimal character then isxdigit() return non-zero integer otherwise return 0.

Example program for C isxdigit() function

#include <ctype.h>
#include <stdio.h>

int main() {
   char c = '5';
   int result;

   // hexadecimal character is passed
   result = isxdigit(c); // result is non-zero
   printf("Result when %c is passed to isxdigit(): %d", c, isxdigit(c));

   c = 'M';

   // non-hexadecimal character is passed
   result = isxdigit(c); // result is 0

   printf("\nResult when %c is passed to isxdigit(): %d", c, isxdigit(c));

   return 0;
}

OUTPUT : - 

C isxdigit()

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Example program for isspace() in c

 The isspace() function in c programming used to check whether a character is a white-space character or not.

It return the non-zero integer if given argument to the isspace() in c is a white-space character, otherwise return 0.

Syntax For isspace() function in c: -

int isspace(int argument);

First check out the List of all white-space characters in C programming are:

Check white-space character

Example program for Check white-space character

#include <stdio.h>
#include <ctype.h>
int main()
{
    char c;
    int result;

    printf("Enter a character: ");
    scanf("%c", &c);
    
    result = isspace(c);

    if (result == 0)
    {
        printf("Not a white-space character.");
    }
    else
    {
        printf("White-space character.");
    }

    return 0;
}

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Example program for ispunct in c

 The ispunct() function in c programming checks whether a character is a punctuation mark or not.

Syntax for ispunct() in c

int ispunct(int argument);

it returns a non-zero integer if given characters to ispunct() in c is an punctuation otherwise return 0.

Example for Program to check punctuation with the help of ispunct() function in c:-

#include <stdio.h>
#include <ctype.h>

int main() {
   char c;
   int result;

   c = ':';
   result = ispunct(c);

   if (result == 0) {
      printf("%c is not a punctuation", c);
   } else {
      printf("%c is a punctuation", c);
   }

   return 0;
}

 Output

ispunct in c

 

 

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Example program for isprint() in c

 The isprint() function in c programming is used to check the given character is a printable character or not.

Printable characters in c programming are just the opposite of control characters and these type of characters checked using iscntrl() function in c.

Syntax for isprint() in c

int isprint( int arg );

for return value if the given characters passed to isprint() function in c is a printable character then it return non-zero integer otherwise return zero.

isprint() in c takes argument in the form of integer and returns.

Example for C isprint() function

 

#include <ctype.h>
#include <stdio.h>

int main()
{
    char c;

    c = 'Q';
    printf("Result when a printable character %c is passed to isprint(): %d", c, isprint(c));

    c = '\n';
    printf("\nResult when a control character %c is passed to isprint(): %d", c, isprint(c));

    return 0;
}

 OUTPUT : - 

C isprint() function in c

 

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Example program for isgraph in c

 The isgraph() function in c use to checks that given character is a graphic character or not.

What is graphic character:- Characters which have graphical representation are call as graphic characters. 

isgraph in c return the non zero integer if passed argument is an 
graphic character otherwise returns 0.

Syntax for isgraph in c 

int isgraph(int argument);

 Example program to Check graphic character with help of isgraph in c

 

#include <stdio.h>
#include <ctype.h>
int main()
{
    char c;
    int result;

    c = ' ';
    result = isgraph(c);
    printf("When %c is passed to isgraph() = %d\n", c, result);

    c = '\n';
    result = isgraph(c);
    printf("When %c is passed to isgraph() = %d\n", c, result);

    c = '9';
    result = isgraph(c);
    printf("When %c is passed to isgraph() = %d\n", c, result);  

 OUTPUT : -

When   is passed to isgraph() = 0
When 
 is passed to isgraph() = 0
When 9 is passed to isgraph() = 1

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Example program for iscntrl() function in c

•   iscntrl() function in c Used to check if the given character is a control character or not.

• Characters that are not print on the screen are known as control characters for exam newline.

•  If a character passed by iscntrl() function is a  control character then it  return non zero integer value otherwise return 0. 

•   iscntrl() C is define in ctype.h header file.

• this function  takes a single argument and returns an integer.
  

Syntax for iscntrl() in c :-

int iscntrl(int argument);

Example program for iscntrl() in c : -

 

#include <stdio.h>
#include <ctype.h>

int main()
{
    char c;
    int result;

    c = 'Q';
    result = iscntrl(c);
    printf("When %c is passed to iscntrl() = %d\n", c, result);

    c = '\n';
    result = iscntrl(c);
    printf("When %c is passed to iscntrl() = %d", c, result);

    return 0;
}

 OUTPUT : -

When Q is passed to iscntrl() = 0
When 
 is passed to iscntrl() = 1

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Example program for islower() function in c

 The islower() function in c checks  that the given character is lowercase alphabet (a-z) or not.

Syntax :- 

int islower( int arg );

 islower() function takes a single argument in the form of  integer and return the value of integer type.

Return Value islower() function in c : -

• Non-zero number (x > 0)  it means given Argument is a lowercase alphabet.

• Zero (0) then given Argument is not a lowercase alphabet.
  

Example for C islower() function in c

#include <stdio.h>
#include <ctype.h>

int main()
{
    char c;

    c='t';
    printf("Return value when %c is passed to islower(): %d", c, islower(c));

    c='D';
    printf("\nReturn value when %c is passed to islower(): %d", c, islower(c));

    return 0;
}

Output

Return value when t is passed to islower(): 2 Return value when D is passed to is islower(): 0

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Example program for isupper() function in c

As it's name says isupper() function in c programming checks whether given character is an uppercase alphabet (A-Z) or not.

C isupper() syntax : - 

int isupper(int argument);

• isupper() function takes a single argument in the form of int.

• Given argument converted into to its ASCII for the check.

•  isupper() define in <ctype.h> header file.

 C isupper() Function Return Value

 

isupper in c

Example program for C isupper() function

#include <stdio.h>
#include <ctype.h>
int main()
{
    char c;

    c = 'C';
    printf("Return value when uppercase character %c is passed to isupper(): %d", c, isupper(c));

    c = '+';
    printf("\nReturn value when another character %c is passed to is isupper(): %d", c, isupper(c));

   return 0;
}

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 The isalnum() function in C use to checks given argument  is an alphanumeric character (alphabet or number) or not.

Syntax : -

int isalnum(int argument);

This function is define in ctype.h header file.

Return Value For isalnum() function in c

it return 1 if given argument in program is an alphanumeric character.

isalnum() function return 0 if given argument in program is not an alphabet or a digit.

Example program for isalnum() function in c

#include <stdio.h>
#include <ctype.h>
int main()
{
    char c;
    int result;

    c = '5';
    result = isalnum(c);
    printf("When %c is passed, return value is %d\n", c, result);

    c = 'Q';
    result = isalnum(c);
    printf("When %c is passed, return value is %d\n", c, result);

    c = 'l';
    result = isalnum(c);
    printf("When %c is passed, return value is %d\n", c, result);

    c = '+';
    result = isalnum(c);
    printf("When %c is passed, return value is %d\n", c, result);

    return 0;
}

 

 Output of Program

• When 5 is passed, return value is 1
• When Q is passed, return value is 1
• When l is passed, return value is 1
• When + is passed, return value is 0

 

 

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Example Program for memset function in c

 memset() function in C use to take a memory location and taken a VOID* pointer and this function copies the first n byte in memory location.

After update the memory location it return that location with the help of pointer.

memset c

 

Syntax :  -

void* memset(void* mem_loc, int c, size_t n);

mem_loc is a memory location

c is an unsigned character in that upper syntax

Header File for memset function in c

Here this function deal with the characters so we have to use header file in the program

Now the complete import for memset function

#include <string.h>
 
void* memset(void* mem_loc, int c, size_t n);

Program Example for memset c

#include <stdio.h>

#include <string.h>

 
int main() {
    char a[] = {"Hello from functioninc"};
 
    printf("a = %s\n", a);
     
    printf("Filling the first 5 characters a with 'P' using memset\n");
     
    memset(a, 'P', 5 * sizeof(char));
     
    printf("After memset, a = %s\n", a);
 
    return 0;
}

Then the 5 character of the given string is filled by the 'P'

a = Hello from Functioninc
Filling the first 5 characters with 'P' using memset function in c
After memset c, a = PPPPP from Functioninc

Conclusion of memset c

Here we learn about the memset function in c and how to allocate the memory location.

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List of function program in c programming language

 Well as all of you can see in previous tutorial of function in c programming we try to cover all in-build function in c not just only c but also other programming language like python, javascript, SQL, and other languages.

List of function program in c programming language

 

 

In this tutorial you can find all the function program in c and also learn about HOW TO USE IN-BUILD FUNCTION IN C with program example with explanation for these programs.

Check out our list of function program in c 

• C program to seek out the length of the string

•  Use of strlen() function in c programming 

• strcmp() C Program and strncmp() function in c

• Example of strcpy Program In C 

• C program example for strchr function in c 

• Strcspn function in c

• Example for bsearch function program in c

• fput() program in C

• Example Program For Lab() Function

• Example program for System() function in c

• C program for ferror()

• Example program for fscanf  function

• Learn to use the fflush in c

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