The Practice of Programming Solutions

Provide high quality solutions to the exercises in "The Practice of Programming" by Kernighan and Pike, also referred to as "tpop".

Chapter 1. Style

Chapter 1. Style

Exercise 1-2. Improve this function:

?    int smaller(char *s, char *t) {
?        if (strcmp(s, t) < 1)
?            return 1;
?        else
?            return 0;
?    }

solution

Exercise 1-4. Improve each of these fragments:

?    if ( !(c == 'y' || c == 'Y') )
?        return;

?    length = (length < BUFSIZE) ? length : BUFSIZE;

?    flag = flag ? 0 : 1;

?    quote = (*line == '"') ? 1: 0;

?    if (val & 1)
?        bit = 1;
?    else
?        bit = 0;

solution

Exercise 1-5. What is wrong with this excerpt?

?    int read(int *ip) {
?        scanf("%d", ip);
?        return *ip;
?    }

?    insert(&graph[vert], read(&val), read(&ch));

solution

Exercise 1-6. List all the different outputs this could produce with various orders of evaluation:

?    n = 1;
?    printf("%d, %d\n", n++, n++);

Try it on as many compilers as you can, to see what happens in practice. solution

mathsyouth/the-practice-of-programming-solutions

The Practice of Programming Solutions

Table of Contents

Chapter 1. Style