#include <stdio.h>
 
int main(void) {
	char buffer[] = "Welcome to Computer Networks! Enjoy Network Programming.";
	printf("Original:\n%s\n", buffer);
	int i;
	char temp;
	while(i<strlen(buffer)/2){
        if(i%2 ==1){
            temp = buffer[i];
            buffer[i] = buffer[strlen(buffer)-i-1];
            buffer[strlen(buffer)-i-1] = temp;
        }
        i++;
    }
    printf("Swapped:\n%s\n", buffer);
    i = 0;
    while(i<strlen(buffer)/2){
        if(i%2 ==1){
            temp = buffer[i];
            buffer[i] = buffer[strlen(buffer)-i-1];
            buffer[strlen(buffer)-i-1] = temp;
        }
        i++;
    }
    printf("Swapped back:\n%s\n", buffer);
	return 0;
}
 

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