Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Program to find out the data type of user input in C++
In this problem, we are given input from the user. Our task is to create a program to find out the data type of user input in C++.
Problem Description − We will take input from the user and check the data type of the input value.
Let’s take an example to understand the problem,
Example 1:
Input − 34
Output − It is an integer
Example 2:
Input − tutorialspoint
Output − It is a string
Solution Approach:
We will check if the input string is a number or not a number.
If it is a number, we will check if it is an integer or a float value.
If it is not a number, we will check if it is a string.
Example
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
int main() {
char input[50] = "";
double temp;
int intVal;
char stringVal[50] = "";
double val = 1e-12;
fgets(input, 100, stdin);
if (sscanf(input, "%lf", &temp) == 1) {
intVal = (int)temp;
if (fabs(temp - intVal) / temp > val)
printf("The input is a floating point\n");
else
printf("The input is an integer\n");
}
else if (sscanf(input, "%s", stringVal) == 1)
printf("The input is a string\n");
else
printf("input not recognized\n");
}Input:
452
Output:
The input is an integer
Updated on: 01-Oct-2020
642 Views
Advertisements