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ivanbrennanivanbrennan
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chapter 13 exercises
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‎ex.13.10.c

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#include <stdio.h>
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#include <ctype.h>
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#define IS_SPECIAL(c) !(isalpha(c)) && !(isdigit(c))
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int main (void)
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{
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printf ("islower:\n");
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printf ("a: %i\n", islower('a'));
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printf ("z: %i\n", islower('z'));
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printf ("A: %i\n", islower('A'));
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printf ("Z: %i\n", islower('Z'));
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printf ("0: %i\n", islower('0'));
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printf ("9: %i\n", islower('9'));
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printf ("!: %i\n\n", islower('!'));
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printf ("isupper:\n");
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printf ("a: %i\n", isupper('a'));
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printf ("z: %i\n", isupper('z'));
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printf ("A: %i\n", isupper('A'));
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printf ("Z: %i\n", isupper('Z'));
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printf ("0: %i\n", isupper('0'));
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printf ("9: %i\n", isupper('9'));
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printf ("!: %i\n\n", isupper('!'));
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printf ("isalpha:\n");
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printf ("a: %i\n", isalpha('a'));
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printf ("z: %i\n", isalpha('z'));
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printf ("A: %i\n", isalpha('A'));
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printf ("Z: %i\n", isalpha('Z'));
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printf ("0: %i\n", isalpha('0'));
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printf ("9: %i\n", isalpha('9'));
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printf ("!: %i\n\n", isalpha('!'));
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printf ("isdigit:\n");
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printf ("a: %i\n", isdigit('a'));
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printf ("z: %i\n", isdigit('z'));
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printf ("A: %i\n", isdigit('A'));
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printf ("Z: %i\n", isdigit('Z'));
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printf ("0: %i\n", isdigit('0'));
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printf ("9: %i\n", isdigit('9'));
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printf ("!: %i\n\n", isdigit('!'));
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printf ("IS_SPECIAL:\n");
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printf ("a: %i\n", IS_SPECIAL('a'));
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printf ("z: %i\n", IS_SPECIAL('z'));
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printf ("A: %i\n", IS_SPECIAL('A'));
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printf ("Z: %i\n", IS_SPECIAL('Z'));
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printf ("0: %i\n", IS_SPECIAL('0'));
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printf ("9: %i\n", IS_SPECIAL('9'));
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printf ("!: %i\n\n", IS_SPECIAL('!'));
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return 0;
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}

‎ex.13.3.c

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#include <stdio.h>
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#define MIN(x, y) ( (x) <= (y) ) ? (x) : (y)
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int main (void)
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{
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printf ("MIN(3, -4) = %i\n", MIN(3, -4));
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return 0;
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}

‎ex.13.4.c

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#include <stdio.h>
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#define MAX(x, y) ((x >= y) ? x : y)
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#define MAX3(x, y, z) MAX(x, MAX(y, z))
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int main (void)
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{
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printf ("MAX(3, -4, 7) = %i\n", MAX3(3, -4, 7));
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return 0;
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}

‎ex.13.5.c

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#include <stdio.h>
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#define SHIFT(num, n) ( (n > 0) ? (num >>= n) : (num <<= -n) )
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int main (void)
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{
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unsigned int num = 3;
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SHIFT(num, 1);
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printf ("%u\n", num);
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SHIFT(num, -2);
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printf ("%u\n", num);
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return 0;
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}

‎ex.13.6.c

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#include <stdio.h>
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#define IS_UPPER_CASE(c) ('A' <= (c)) && ((c) <= 'Z')
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int main (void)
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{
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printf ("a: %i\n", IS_UPPER_CASE('a'));
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printf ("z: %i\n", IS_UPPER_CASE('z'));
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printf ("A: %i\n", IS_UPPER_CASE('A'));
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printf ("Z: %i\n", IS_UPPER_CASE('Z'));
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printf ("1: %i\n", IS_UPPER_CASE('1'));
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return 0;
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}

‎ex.13.7.c

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#include <stdio.h>
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#define IS_LOWER_CASE(c) ('a' <= (c)) && ((c) <= 'z')
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#define IS_UPPER_CASE(c) ('A' <= (c)) && ((c) <= 'Z')
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#define IS_ALPHABETIC(c) IS_LOWER_CASE(c) || IS_UPPER_CASE(c)
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int main (void)
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{
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printf ("a: %i\n", IS_ALPHABETIC('a'));
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printf ("z: %i\n", IS_ALPHABETIC('z'));
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printf ("A: %i\n", IS_ALPHABETIC('A'));
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printf ("Z: %i\n", IS_ALPHABETIC('Z'));
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printf ("1: %i\n", IS_ALPHABETIC('1'));
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return 0;
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}

‎ex.13.8.c

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#include <stdio.h>
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#define IS_LOWER_CASE(c) ('a' <= (c)) && ((c) <= 'z')
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#define IS_UPPER_CASE(c) ('A' <= (c)) && ((c) <= 'Z')
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#define IS_ALPHABETIC(c) IS_LOWER_CASE(c) || IS_UPPER_CASE(c)
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#define IS_DIGIT(c) ('0' <= (c)) && ((c) <= '9')
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#define IS_SPECIAL(c) !(IS_ALPHABETIC(c)) && !(IS_DIGIT(c))
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int main (void)
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{
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printf ("IS_DIGIT:\n");
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printf ("a: %i\n", IS_DIGIT('a'));
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printf ("z: %i\n", IS_DIGIT('z'));
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printf ("A: %i\n", IS_DIGIT('A'));
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printf ("Z: %i\n", IS_DIGIT('Z'));
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printf ("0: %i\n", IS_DIGIT('0'));
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printf ("9: %i\n", IS_DIGIT('9'));
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printf ("!: %i\n\n", IS_DIGIT('!'));
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printf ("IS_SPECIAL:\n");
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printf ("a: %i\n", IS_SPECIAL('a'));
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printf ("z: %i\n", IS_SPECIAL('z'));
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printf ("A: %i\n", IS_SPECIAL('A'));
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printf ("Z: %i\n", IS_SPECIAL('Z'));
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printf ("0: %i\n", IS_SPECIAL('0'));
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printf ("9: %i\n", IS_SPECIAL('9'));
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printf ("!: %i\n\n", IS_SPECIAL('!'));
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return 0;
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}

‎ex.13.9.c

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#include <stdio.h>
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#define ABSOLUTE_VALUE(n) ((n) >= 0) ? (n) : -(n)
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int main (void)
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{
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printf ("ABSOLUTE_VALUE( 9 + 3): %i\n", ABSOLUTE_VALUE( 9 + 3));
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printf ("ABSOLUTE_VALUE(-9 + 3): %i\n", ABSOLUTE_VALUE(-9 + 3));
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return 0;
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}

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