How to read a paragraph with white spaces using scanf function in c language.?

Answer 1

Try something like :

char str[100];
scanf ("%[^\n]%*c", str);

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I think that fgets function is better to use for your purpose....

Answer 2

Please Can you explain me what have you written in scanf function ?i dont understand.

Answer 3

The expression "%[^\n]%*c"
means that all the characters entered as the input, including the spaces, until we hit the enter button are stored in the variable str

To be more specific,
[^\n] is regular expression that will exclude \n i.e in other words scanf will read all char until you hit enter button.

%*c , * is used to indicate don’t assign value to str until you hit enter or scanf encounters ‘\n’.