Emptying Strings and fscanf

Hi! For my first question, how do I empty a string? I want to remove all its elements since I will be reusing the string. We're required to create a program that will make the user input a string and then it should have the option of deleting the contents of the string.

For my second problem, let's say that I have a text file named trial.txt with this written:

john
15

sam
17

joe
19

I want to print just the numbers below the names. In my program, I'm currently looping this:

Code:

fscanf(fp,"\n%d\n\n",age);
printf("%d\n",age);

It's supposed to print the ages one by one but all it prints are zeroes. How do I fix this?

1) set the first element to '\0', eg. str[0] = '\0'

2) you can't skip data with fscanf, but you can discard it using * (like, %*s will discard a string).

Fixed it! Thanks!