C isspace() function
C isspace(int ch)
The isspace() function is used to check whether a character is a space character or not. The function is defined in the ctype.h header file.
Syntax:
int isspace(int argument);
ispunct() Parameters:
Name | Description | Required /Optional |
---|---|---|
ch | ch is a character of class upper in the current locale. | Required |
Return value from isupper()
- The isspace() function return non-zero if ch is a white-space character; otherwise, they shall return 0.
Example: 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;
}
Output:
Input a character: A The said character is not a white-space character. -------------------------------- Input a character: The said character is White-space character.
C Programming Code Editor:
Contribute your code and comments through Disqus.
Previous C Programming: C ispunct()
Next C Programming: C isupper()
C Programming: Tips of the Day
Reading a string with scanf :
An array "decays" into a pointer to its first element, so scanf("%s", string) is equivalent to scanf("%s", &string[0]). On the other hand, scanf("%s", &string) passes a pointer-to-char[256], but it points to the same place.
Then scanf, when processing the tail of its argument list, will try to pull out a char *. That's the Right Thing when you've passed in string or &string[0], but when you've passed in &string you're depending on something that the language standard doesn't guarantee, namely that the pointers &string and &string[0] -- pointers to objects of different types and sizes that start at the same place -- are represented the same way.
Ref : https://bit.ly/3pdEk6f
- Weekly Trends
- Java Basic Programming Exercises
- SQL Subqueries
- Adventureworks Database Exercises
- C# Sharp Basic Exercises
- SQL COUNT() with distinct
- JavaScript String Exercises
- JavaScript HTML Form Validation
- Java Collection Exercises
- SQL COUNT() function
- SQL Inner Join
- JavaScript functions Exercises
- Python Tutorial
- Python Array Exercises
- SQL Cross Join
- C# Sharp Array Exercises