Exercises : Answer the following Question

To help you solidify your understanding of this hour's lesson, you are encouraged to try to answer the quiz questions and finish the exercises provided in the Workshop before you move to the next lesson.

 Do the following two for loops have the same number of iterations?

    for (j=0; j<8; j++);
    for (k=1; k<=8; k++);

    Is the following for loop

    for (j=65; j<72; j++) printf("%c", j);
    int k = 65;
    while (k<72)
        printf("%c", k);
        k++;
    }

    Can the following while loop print out anything?

    int k = 100;
    while (k<100){
        printf("%c", k);
        k++;
    }

    Can the following do-while loop print out anything?

    int k = 100;
    do {
        printf("%c", k);
        k++;
    } while (k<100);

 

Exercises

    What is the difference between the following two pieces of code?

    for (i=0, j=1; i<8; i++, j++)
         printf("%d  +  %d  =  %d\n", i, j, i+j);
    for (i=0, j=1; i<8; i++, j++);
         printf("%d  +  %d  =  %d\n", i, j, i+j);

    Write a program that contains the two pieces of code shown in exercise 1, and then execute the program. What are you going to see on the screen?
    Rewrite the program in Listing 7.4. This time, you want the for statement to keep looping until the user enters the character K.
    Rewrite the program in Listing 7.6 by replacing the do-while loop with a for loop.
    Rewrite the program in Listing 7.7. This time, use a while loop as the outer loop and a do-while loop as the inner loop. 

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