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Add clarity to EOF. Add %ld for longs in C

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Levi Bostian 2013-08-31 13:06:37 -05:00
parent dba7ec8b96
commit f1b1fd8e2e
1 changed files with 7 additions and 4 deletions
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c.html.markdown
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@ -34,6 +34,7 @@ Multi-line comments look like this. They work in C89 as well.
"%3d" // minimum length of 3 digits for integer (right justifies text)
"%s" // string
"%f" // float
"%ld" // long
"%3.2f" // minimum 3 digits left and 2 digits right decimal float
"%7.4s" // (can do with strings too)
"%c" // char
@ -429,10 +430,12 @@ void str_reverse(char *str_in)
// Built in functions:
// from stdio.h:
int c = getchar(); //reads character from user. If user types hello, only h is read.
// getchar() can be stored into int or char. I am using int because char is not large
// enough to store EOF used below.
while (c != EOF) { // EOF is value for "end of file". Linux: CTRL+D, Windows: CTRL+X
int c = getchar(); //reads character from input. If input = hi, only h is read.
// getchar() can be stored into int or char. I am using int because
// char is not large enough to store EOF used below.
while ((c = getchar()) != EOF) { // EOF constant "end of file".
// Linux: CTRL+D, Windows: CTRL+X
// must have () around getchar() as != is run before =.
putchar(c); //prints character (without newline at end)
char c = getchar();
}