greatestOfThree.c

#include<stdio.h>

#define true 1
#define false 0
int main() {
    int a,a1, b,b1, c,c1;
    scanf("%d%d%d", &a1, &b1, &c1);
    a = a1; b = b1; c = c1;
    if (a > b && a > c) {
        c = a;
    }
    else if (b > c) {
        c = b;
    }
    printf("greatest value using if-else:\t\t%d\n", c);

    a = a1; b = b1; c = c1;
    if (a > b) {
        if (a > c) {
            c = a;
        }
    }
    else {
        if (b > c) {
            c = b;
        }
    }
    printf("greatest value using nested if-else:\t%d\n", c);

    a = a1; b = b1; c = c1;
    switch (a > b) {
    case true:
        switch (a > c) {
        case true: c = a; break;
        }break;
    case false:
        switch (b > c) {
        case true: c = b; break;
        }break;
    }
    printf("greatest value using switch:\t\t%d\n", c);

    a = a1; b = b1; c = c1;
    printf("greatest value using ternary operator:\t%d", (a > b) ? (a > c) ? a : c : (b > c) ? b : c);
    return 0;
}