C Exercises: Read a floating-point number and find the range where it belongs from four given ranges

Last update on September 19 2025 12:45:15 (UTC/GMT +8 hours)

Find range of a number from four given ranges

There are three given ranges. Write a C program that reads a floating-point number and finds the range where it belongs from four given ranges.

Ranges: 0-30, 31-50, 51-80, 81-100

Sample Solution:

C Code:

#include <stdio.h>

int main ()
{
    // Declare a variable "x" to hold the input number
    float x = 0;

    // Prompt the user to input a number
    printf("Input a number: ");

    // Read the input number
    scanf("%f", &x);

    // Check the range of the input number and print the corresponding message
    if (x >= 0 && x <= 30)
        printf("Range [0,30]\n");
    else if (x > 30 && x <= 50)
        printf("Range (30,50]\n");
    else if (x > 50 && x <= 80)
        printf("Range (50,80]\n");
    else if (x > 80 && x <= 100)
        printf("Range (80,100]\n");
    else
        printf("\nNot within range..!\n");
}

Sample Output:

Input a number: 87
Range (80,100]

Flowchart:

For more Practice: Solve these Related Problems:

• Write a C program to determine the appropriate range for a floating-point number using nested if-else statements.
• Write a C program to map a given float to one of four ranges by computing an index from an array of boundaries.
• Write a C program that uses a switch-case structure to output a range label for a user-supplied floating-point number.
• Write a C program to classify a float into one of four predefined ranges and display a custom message for each.

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