#include <stdio.h>
#include <string.h>
/* Function to reverse a portion of the string */
void reverse(char *str, int start, int end) {
    while (start < end) {
        char temp = str[start];
        str[start] = str[end];
        str[end] = temp;
        start++;
        end--;
    }
}
int main() {
    char sentence[] = "C programming is fun";
    int len = strlen(sentence);
    /* Step 1: Reverse the entire string */
    reverse(sentence, 0, len - 1);
    /* Step 2: Reverse each word */
    int start = 0;
    for (int i = 0; i <= len; i++) {
        if (sentence[i] == ' ' || sentence[i] == '\0') {
            reverse(sentence, start, i - 1);
            start = i + 1;
        }
    }
    printf("%s\n", sentence);
    return 0;
}