Question

Write a C program that does the following:

1) Asks the user to enter an integer N

2) Asks the user to enter three words with at least N letters and at most 20 letters

3) Prints the first N letters from the first word

4) Prints the last N letters from the second word

5) Prints all letters in the odd position in the third word

Output:

Please enter an integer N: 3

Please enter a word with at least 3 and at most 20 letters: Germany

Please enter a second word with at least 3 and at most 20 letters: China

Please enter a third word with at least 3 and at most 20 letters: Argentina

Germany starts with Ger

China ends with ina

Odd letters in the third word are: A g n i a

Answer 1

C PROGRAM:

#include<stdio.h>

#include <string.h>

// main() function

int main(int argc, char *argv[])

{

    // Declare variable N

    int N;

   // Declare variable word1,word2 and word3

    char word1[20];

    char word2[20];

    char word3[20];

    int len;

    // Asks the user to enter an integer N

    printf("Please enter an integer N: ");

    scanf("%d",&N);

    // Asks the user to enter first word with at least N letters and at most 20 letters

    do{

        printf("Please enter a word with at least %d and at most 20 letters: ",N);

        scanf("%s", word1);

        len = strlen(word1);

        // check input word len greater then N

    }while(len<N);

    // Asks the user to enter second word with at least N letters and at most 20 letters

    do{

         printf("Please enter a second word with at least %d and at most 20 letters: ",N);

         scanf("%s", word2);

        len = strlen(word2);

    // check input word len greater then N

    }while(len<N);

   //  Asks the user to enter third word with at least N letters and at most 20 letters

    do{

        printf("Please enter a third word with at least %d and at most 20 letters: ",N);

        scanf("%s", word3);

        len = strlen(word3);

    // check input word len greater then N

    }while(len<N);

    // Prints the first N letters from the first word

    printf("%s starts with ", word1);

    for(int i=0;i<N;i++){

        printf("%c",word1[i]);

    }

    // Prints the last N letters from the second word

    // for last letters word + strlen(word)-N

    printf("\n%s ends with %s\n", word2, word2 + strlen(word2) - N);

    // Prints all letters in the odd position in the third word

    printf("Odd letters in the third word are: ");

    for(int i=0;i<strlen(word3);i+=2){

        printf("%c ",word3[i]);

}

   return 0;

}

OUTPUT:

NOTE: If you don't understand any step please tell me.