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| scanf explanation |
scanf explanation
scanf is used in taking input in user , it returns the no of values that are readed form user.
syntax :
scanf("control string", arg1 .... , argn);
control string:
it means type of data that is to be read form user. it is give by
%[*][width][modifier]type
argq....,argn:
these are addresses of variables , which can be given by writing ( &var ).
(all the things specified in the square brackets are optional)
*
it is used to suppress the input ( input is taken form user but would not store it in variable)
eg :
scanf("%*d",&a) // a is of int type
input output
123 garbage value or no value if we tried to print a
width
it is used in case of scanning string ,by specifying , it will limit the no of character
eg :
scanf("%3s",a) // a is character array
input output
HelloWorld Hel
modifier
length modifier are nothing but the modifier used with the basic data type
| length | their use |
| h | when variable is of type short or unsigned shot |
| l | when variable is of type long or unsigned long |
| L | when variable is of type long double |
eg for long double:
printf("%Lf",a);
input: output:
a=345.34 345.340000
(type is any valid data type in c)
(leave the comment down below if you have a doubt or suggestions ,thnks🙂)
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