Question

Use nested if to check if a triangle is equilateral, isosceles, or scalene.

Updated on May 31, 2025 | By Learnzy Admin | 👁️ Views: 185 students

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Solution

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#include <stdio.h>

int main() {
    int a, b, c;

    printf("Enter three sides of the triangle: ");
    scanf("%d %d %d", &a, &b, &c);

    if (a + b > c && b + c > a && c + a > b) {
        if (a == b && b == c) {
            printf("Equilateral triangle\n");
        } else if (a == b || b == c || a == c) {
            printf("Isosceles triangle\n");
        } else {
            printf("Scalene triangle\n");
        }
    } else {
        printf("Not a valid triangle\n");
    }

    return 0;
}

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