We can take string input in C using scanf(“%s”, str). But, it accepts string only until it finds first space.
There are 3 method by which C program accepts string with space in the form of user input.
Let we have a character array (string) named as str. So, we have declared a variable as char str
Method 1 : Using gets
Syntax : char *gets(char *str)
Note : gets() has been removed from c11. So it might give you a warning when implemented.
We see here that it doesn’t bothers about size of array. So, there is chance of Buffer Overflow.
Method 2 : To overcome above limitation, we can use fgets as :
Syntax : char *fgets(char *str, int size, FILE *stream)
Example : fgets(str, 20, stdin); as here, 20 is MAX_LIMIT according to declaration.
Method 3 : Using %[^\n]%*c inside scanf
Example : scanf(“%[^\n]%*c”, str);
Explanation : Here,  is the scanset character. ^\n tells to take input until newline doesn’t get encountered. Then, with this %*c, it reads newline character and here used * indicates that this newline character is discarded.
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