How do you make ":" aligns? like on a full straight line going down

Question

current situation

name:

age:

wanted

name    :

age       :

Answer 1

What language do you use?

You need to insert padding to align your text.

Many languages have built-in features. For instance, C's printf() has the format specifiers. See the examples there or this short one below.

For left justification, I used a negative number (-10), then the text to be displayed, and then the value that belongs to the texts.

#include <stdio.h>

int main()
{
    printf("%-10s : %s\n", "name", "John Doe");
    printf("%-10s : %d\n", "age", 64);
    return 0;
}