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Ex3. Operations on strings (6 marks)

Ex3_1. Conversion (3 marks)

Get a number represented as a string from user input using input('', 's') (notice the second parameter 's') and convert the string to a number.

Hint: Use str2num() . See its documentation and pay attention to the format requirements. Also read the note on the documentation page.

Sample Test Cases

Input:

123.4

Output:

  123.4000

Input:

wtcl555

Output:

Ex3_2. String concatenation (3 marks)

Concatenate two strings s1 and s2 obtained from user input.

Hint: You can either use strcat() or regard the strings as arrays.

Sample Test Case

Input:

wtcl
555

Output:

wtcl555