Lernen Challenge: Nested If Statements | Introduction to Conditional Statements

When you need to make more complex decisions in your C programs, you can use nested if statements. This means placing one if statement inside another, allowing your code to check for multiple related conditions in a sequence. With nested if statements, your program can react differently depending on combinations of conditions, rather than just a single one.

nested_if_syntax.c


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// Syntax of nested if statements in C
if (first_condition) {
    if (second_condition) {
        // Statements executed if both condition1 and condition2 are true
    }
}

Nested if statements are useful when your program needs to make decisions that depend on more than one condition. For example, you might want to check if a number is positive, negative, or zero, and then perform an additional check within those categories.

check_number.c


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#include <stdio.h>

int main() {
    int number = 7;

    if (number > 0) {
        printf("The number is positive.\n");
    } else {
        if (number < 0) {
            printf("The number is negative.\n");
        } else {
            printf("The number is zero.\n");
        }
    }

    return 0;
}

By nesting if statements, you create a decision tree that allows your program to handle complex logic in a structured way.

Aufgabe

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Write a function evaluateScore that takes an integer score. In main, call evaluateScore and store the returned value in a variable named result. If score is greater than 50, check again inside:

If it is greater than 80, return 2.
Otherwise, return 1.
If the score is not greater than 50, return 0.

Lösung

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Abschnitt 1. Kapitel 4

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