Larger than and less than in C switch statement

Question

I\'m trying to write a code that has a lot of comparison

Write a program in “QUANT.C” which “quantifies” numbers. Read an integer “x” and test it, pro

Answer 1

A switch-less and if-else-less method:

#include <stdio.h>

int main(void)
{
    int a=0, i;
    struct {
        int value;
        const char *description;
    } list[] = {
        { -999, "hugely negative" },
        { -99, "very negative" },
        { 0, "negative" },
        { 1, "zero" },
        { 100, "positive" },
        { 1000, "very positive" },
        { 1001, "hugely positive" }
    };

    printf("please enter a number : \n");
    scanf("%i",&a);

    for (i=0; i<6 && a>=list[i].value; i++) ;
    printf ("%s\n", list[i].description);

    return 0;
}

The for-loop contains no code (there is just an empty statement ;) but it still runs over the array with values and exits when the entered value a is equal to or larger than the value element in the array. At that point, i holds the index value for the description to print.