String Formats

Question 1

%d

Answer 1

%d is used as a placeholder for numeric decimal values.

Outputs the number in base 10

Question 2

%i

Answer 2

%i is used as a placeholder for numeric or decimal values.

Signed integer decimal.

Question 3

%o

Answer 3

%o is used as a placeholder for Octal format.

Outputs the number in base 8.

Question 4

%u

Answer 4

Obsolete type – it is identical to ‘d’.

Question 5

%x

Answer 5

%x is used as a placeholder for Hex format
lowercase characters.
Outputs the number in base 16, using lower- case letters for the digits above 9.

Question 6

%X

Answer 6

%X is used as a placeholder for Hex format
UPPERcase characters.
Outputs the number in base 16, using upper- case letters for the digits above 9.

Question 7

%e

Answer 7

%E is used as a placeholder for Exponent notation.
Floating point exponential format (lowercase).
usually base power 10 or 2
An approx or undefined number, presented as a range of numbers which it can be taken from. This number will have a power/factor allocated to it usually base power 10 or 2

Question 8

%E

Answer 8

%E is used as a placeholder for Exponent notation.
Floating point exponential format (uppercase).
Same as ‘e’ except it uses an upper case ‘E’ as the separator character.
An approx or undefined number, presented as a range of numbers which it can be taken from. This number will have a power/factor allocated to it usually base power 10 or 2

Question 9

%f

Answer 9

%f is used as a placeholder for Fixed point. Displays the number as a fixed-point number. The default precision is 6.
A fixed decimal number with a power/factor usually base power 10 or 2

Question 10

%F

Answer 10

%F is used as a placeholder for Fixed point. Same as ‘f’, but converts nan to NAN and inf to INF.
A fixed decimal number with a power/factor usually base power 10 or 2

Question 11

%g

Answer 11

%g is used as a placeholder for Floating point format.
Uses lowercase exponential format if exponent is less than -4 or not less than precision, decimal format otherwise.
An approx or undefined number, presented as a range of numbers which it can be taken from.

Question 12

%G

Answer 12

%G is used as a placeholder for Floating point format.
Uses uppercase exponential format if exponent is less than -4 or not less than precision, decimal format otherwise.
An approx or undefined number, presented as a range of numbers which it can be taken from.

Question 13

%s

Answer 13

%s is used as a placeholder for string values you want inject into a formatted string.
Converts any non string to string using str()

Question 14

%r

Answer 14

%r is used as a placeholder for an unspecified number or random number
i.e. when program requires user input for a number so does not know it yet
Converts any non string to string using repr()

Question 15

%b

Answer 15

%b is used as a placeholder for Binary numeric values.

Outputs the number in base 2.

Question 16

%c

Answer 16

%c is used as a placeholder for a Character. Converts the integer to the corresponding unicode character before printing.