Program to find out the data type of user input

Take a input from user and find out the data type of input value.

Examples :

Input : geek
Output : The input is a string

Input : chetna
Output : The input is a string

Input : 4
Output : The input is a integer

Recommended: Please try your approach on {IDE} first, before moving on to the solution.

Below is C program to find the datatype of user input :

// C program to find data type 
#include <math.h> 
#include <stdio.h> 
#include <stdlib.h> 
# define MAX_INPUT 100 
  
int main() 
{ 
    // To read input 
    char value[MAX_INPUT] = ""; 
  
    // To store numeric value of input if a  
    // number (float or integer) 
    double temp; 
  
    // To store integral value of input 
    int n; 
  
    // To store string value of input 
    char str[MAX_INPUT] = ""; 
  
    // Precision for integer checking 
    double val = 1e-12; 
  
    fgets(value, 100, stdin); // Read input 
  
    // Check for integers. 
    if (sscanf(value, "%lf", &temp) == 1)  
    { 
        n = (int)temp; // typecast to int. 
        if (fabs(temp - n) / temp > val)  
            printf("The input is a floating point\n");         
        else 
            printf("The input is an integer\n");         
    } 
  
    // Check for string  
    else if (sscanf(value, "%s", str) == 1)      
        printf("The input is a string\n"); 
      
    else // No match.     
        printf("input not recognized\n");     
} 

Output :

4
The input is an integer

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