How to make user input call a function C

Question

How can i use a variable(that I would get from user input) to call a function ?

char user_function[10];
scanf("%s", user_function);
user_function(); //Calls the function named user_function that the user typed

(without having something like this)

char user_function[10];
scanf("%s", user_function);
if( strcmp(user_function, 'printf()'))
printf();

if you dont want to use if, use switch

Alon
– Alon

2016-12-20 01:18:19 +00:00
Commented Dec 20, 2016 at 1:18 — Alon
– Alon, Commented Dec 20, 2016 at 1:18

John3136 · Accepted Answer · 2016-12-20 01:19:44Z

7

You can't.

At some point you have to look at the string contents and use those to call a particular function.

You can "hide it" a bit by doing something like a lookup table/hashmap of strings to function pointers, but in the end it is still just "look at the string and decide what to call"

answered Dec 20, 2016 at 1:19

John3136

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