The isspace() function is one of the Standard Library Function available in C programming, which is used to check the given character is a space or not. In this article we will show you, How to use isspace in C Programming language with example. Before we get into the example, the basic syntax of the isspace in C programming language is as shown below.
C isspace Function syntax
Below function will accept single character as the parameter, and find whether the given character is a space or not.
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isspace(char) |
isspace in C Programming Example
The isspace function is used to find whether the given character is a space character or not. This C program allows the user to enter any character, and check whether the character is space or not using the isspace function.
C PROGRAM CODE
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//Example for isspace in C Programming #include <stdio.h> #include <ctype.h> int main() { char ch; printf("Please Enter Any Valid Character : \n"); scanf("%c", &ch); if(isspace(ch)) { printf("\n You have entered a Space Character"); } else { printf("\n %c is not a Space Character", ch); printf("\n I request you to enter Space Character"); } } |
OUTPUT
Let me enter the Uppercase letter
Let us try with numeric value
ANALYSIS
First we declared a character variable called ch.
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char ch; |
First statement will ask the user to enter any character. And then we are using the scanf to assign the user entered character to ch variable
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printf("Please Enter Any Valid Character : \n"); scanf("%c", &ch); |
Next, we used the If Statement to check whether the character is space, or not using isspace function. If the condition is True then the following statement will be printed
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printf("\n You have entered a Space Character"); |
If the above condition is FALSE then the given character is not a space. So, it will print below statements
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printf("\n %c is not a Space Character", ch); printf("\n I request you to enter Space Character"); |
Without using isspace in C Programming Example
This C program allows the user to enter any character, and check whether the character is space or not using the ASCII table. Here we don’t use the built-in function isspace.
C PROGRAM CODE
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//Example for isspace in C Programming #include <stdio.h> #include <ctype.h> int main() { char ch; printf("Please Enter Any Valid Character : \n"); scanf("%c", &ch); if(ch == 32) { printf("\n You have entered a Space Character"); } else { printf("\n %c is not a Space Character", ch); printf("\n I request you to enter Space Character"); } } |
OUTPUT
Since, 32 is the ASCII value for the space, we replaced the isspace function with 32. I suggest you to cross check the ASCII table.
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