8. Given the input Go west, young man!, what would each of the following programs produce for output? (The ! follows the space character in the ASCII sequence.)
a .
#include <stdio.h>
int main(void) {
char ch;
scanf("%c", &ch);
while (ch != 'g') {
printf("%c", ch);
scanf("%c", &ch);
}
return 0;
}
Go west, youn!
b.
#include <stdio.h>
int main(void)
{
char ch;
scanf("%c", &ch);
while ( ch != 'g' )
{
printf("%c", ++ch);
scanf("%c", &ch);
}
return 0;
}
Hp!xftu-!zpvo
c.
#include <stdio.h>
int main(void)
{
char ch;
do {
scanf("%c", &ch);
printf("%c", ch);
} while ( ch != 'g' );
return 0;
}
Go west, young
d.
#include <stdio.h>
int main(void) {
char ch;
scanf("%c", &ch);
for (ch = '$'; ch != 'g'; scanf("%c", &ch))
printf("%c", ch);
return 0;
}
$o west, youn
9. What will the following program print?
#include <stdio.h>
int main(void) {
int n, m;
n = 30;
while (++n <= 33) printf("%d|", n);
n = 30;
do
printf("%d|", n);
while (++n <= 33);
printf("
***
");
for (
n = 1;
n * n <
200; n += 4)
printf("%d
", n);
printf("
***
");
for (
n = 2, m = 6;
n < m;
n *= 2, m += 2)
printf("%d %d
", n, m);
printf("
***
");
for (
n = 5;
n > 0; n--) {
for (
m = 0;
m <=
n;
m++)
printf("=");
printf("
");
}
return 0;
}
31|32|33|30|31|32|33|
*** 1
5
9
13
*** 2 6
4 8
8 10
***
======
=====
====
===
==
13. Define a function that takes an int argument and that returns, as a long, the square of that value.
long square(int num) {
return ((long) num) * num;
}14. What will the following program print?
#include <stdio.h>
int main(void) {
int k;
for (k = 1, printf("%d: Hi!
", k); printf("k = %d
", k), k * k < 26; k += 2, printf("Now k is %d
", k))
printf("k is %d in the loop
", k);
return 0;
}
1: Hi!
k = 1
k is 1 in the loop Now k is 3
k = 3
k is 3 in the loop Now k is 5
k = 5
k is 5 in the loop Now k is 7
k = 7