Fundamental of C Programming

Page 25

NORTON UNIVERSITY

FORMATTERS FOR scanf() The following characters, after the % character, in a scanf argument, have the following effect. Modifier

Meaning

d

read a decimal integer

o

read an octal value

x

read a hexadecimal value

h

read a short integer

l

read a long integer

f

read a float value

e

read a double value

c

read a single character

s

read a sequence of characters, stop reading when an enter key or whitespace character [tab or space]

[...]

*

Read a character string. The characters inside the brackets indicate the allow-able characters that are to be contained in the string. If any other character is typed, the string is terminated. If the first characteris a ^, the remaining characters inside the brackets indicate that typing them will terminate the string. this is used to skip input fields

Example of scanf() modifiers int number; char text1[30], text2[30]; scanf("%s %d %*f %s", text1, &number, text2);

If the user response is, Hello 14 736.55 uncle sam

then text1 = hello, number = 14, text2 = uncle

and the next call to the scanf function will continue from where the last one left off, so if scanf("%s ", text2);

was the next call, then s

Instructor: CHHIENG Sokha (Mr.) | Tel: 066-660-660

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