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
