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Write a C procedure to swap two integer values and demonstrate its usage.
ScanSolve AI Answer
Okay, NG. This task requires a procedure to swap two integer values. In C, this is typically done by passing pointers to the variables, allowing the function to modify the original values.
Here's the C code for the Swap procedure and a test:
#include <stdio.h>
// Procedure to swap two integer values
// It takes pointers to integers as parameters
void Swap(int *a, int *b) {
int temp; // Declare a temporary variable
temp = *a; // Store the value of 'a' in temp
*a = *b; // Assign the value of 'b' to 'a'
*b = temp; // Assign the value from temp (original 'a') to 'b'
}
int main() {
int value1 = 10;
int value2 = 20;
printf("Before swap:\n");
printf("Value 1: %d\n", value1);
printf("Value 2: %d\n", value2);
// Call the Swap procedure, passing the addresses of value1 and value2
Swap(&value1, &value2);
printf("\nAfter swap:\n");
printf("Value 1: %d\n", value1);
printf("Value 2: %d\n", value2);
return 0;
}
Explanation:
The Swap procedure takes two integer pointers, *a and *b. Inside the procedure, a temporary variable temp is used to hold the value of *a. Then, the value of *b is assigned to *a, and finally, the original value of *a (stored in temp) is assigned to *b. This effectively swaps the values of the variables whose addresses were passed to the procedure. The main function demonstrates how to call Swap and verifies that the values are indeed swapped.
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