Sams Teach Yourself C in 21 Days

Answers for Day 7

Quiz

1. There are two differences between puts()andprintf():
   printf()can print variable parameters.
   puts()automatically adds a newline character to the end of the string it prints.


2. You should include the stdio.h header file when using printf().


3. a.\prints a backslash.
   b.\bprints a backspace.
   c.\nprints a newline.
   d.\tprints a tab.
   e.\a(for “alert”) sounds the beep.


4. a.%sfor a character string
   b.%dfor a signed decimal integer
   c.%ffor a decimal floating-point number


5. a.bprints the literal character b.
   b.\bprints a backspace character.
   c.\looks at the next character to determine an escape character (see Table 7.1).
   d.\prints a single backslash.

Exercises

1.puts()automatically adds the newline; printf()does not. The code is as follows:

printf( “\n” );

puts( “ “ );

2. The code is as follows:
   char c1, c2;
   int d1;
   scanf( “%c %ud %c”, &c1, &d1, &c2 );


3. Your answer might vary:
   #include <stdio.h>
   int x;
   int main( void )
   {
   puts( “Enter an integer value” );

842 Appendix F

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