write a program to print integer no, from 1 to n where n is the input from the user using do while loop in c language use getch

Here is a simple C program that uses a do-while loop to print integers from 1 to n, where n is input from the user. Please note that C does not have a built-in function for getch, so I will use getchar instead.

#include <stdio.h>

int main() {
    int i = 1, n;

    printf("Enter a number: ");
    scanf("%d", &n);

    do {
        printf("%d\n", i);
        i++;
    } while(i <= n);

    printf("Press any key to exit.\n");
    getchar();
    getchar();

    return 0;
}

In this program:

1. We first include the stdio.h library which allows us to use printf and scanf functions.
2. We declare the main function where our program starts.
3. We declare two integer variables, i and n. i is initialized to 1.
4. We ask the user to enter a number and store it in the variable n.
5. We start a do-while loop. In each iteration, we print the value of i and then increment it by 1. The loop continues as long as i is less than or equal to n.
6. After the loop, we print a message asking the user to press any key to exit. We use getchar twice to wait for the user to press a key.
7. Finally, we return 0 to indicate that the program has finished successfully.