C 语言学习经典书籍The C programming language.pdf 英文版
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Chapter 01
1.1 first program:
#include <stdio.h> //include information about standard library
main() // define a function called main
{
printf("hello, world\n"); //"printf" is a founction,"\n" represents the newline character
}
1.2 Variables and Arithmetic Expressions
#include <stdio.h>
/* print Fahrenheit-Celsius table for fahr = 0, 20, ..., 300 */
main()
{
int fahr, celsius;
int lower, upper, step;
lower = 0; /* lower limit of temperature scale */
upper = 300; /* upper limit */
step = 20; /* step size */
fahr = lower;
while (fahr <= upper) {
celsius = 5 * (fahr-32) / 9;
printf("%d\t%d\n", fahr, celsius);
fahr = fahr + step;
}
