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 In the C programming language, decision control structures allow you to control the flow of execution based on specific conditions. These structures help make decisions and choose different paths of execution within your program. There are three main decision control structures in C: if statement, if-else statement, and switch statement. Let's explore each one: 1. if Statement:    The if statement allows you to execute a block of code if a condition is true. It has the following syntax:    ```c    if (condition) {        // code to execute if the condition is true    }    ```    Example:    ```c    int x = 5;    if (x > 0) {        printf("x is positive");    }    ``` 2. if-else Statement:    The if-else statement provides an alternative block of code to execute if the condition is false. It has the f...