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What are character analysis function, explain with C program?
Character analysis and conversion functions
The predefined functions in “ctype.h” library is for analyzing the character input and converting them.
Analysis functions
| S.No | Function | Description |
|---|---|---|
| 1 | isalpha() | An alphabet or not |
| 2 | isdigit() | A digit or not |
| 3 | isspace() | A space, a new line or tab |
| 4 | ispunct() | A special symbol or not |
| 5 | slower() | A lower case letter of alphabet |
| 6 | isupper() | An upper case letter of alphabet |
| 7 | isalphanumeric() | An alphabet/digit or not |
Converting functions
| Function | Description |
|---|---|
| tolower() | Converts an upper case alphabet to lower case |
| toupper() | Converts a lower case alphabet to upper case |
Example
Let us see a program to demonstrate character analysis and conversion functions −
#include<stdio.h> #include<ctype.h> void main(){ //Initializing compile time character variable// char variable = 'A'; //Reading User I/P// //printf("Enter the character : "); //scanf("%c",variable); //Using character analysis function & printing O/p// if (isalpha(variable)){ printf("The character entered is :%c, an alphabet",variable); } else { printf("The character entered is not an alphabet"); } } Output
The character entered is :A, an alphabet
Updated on: 2021-03-09T09:17:07+05:30
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