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
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