CODEWITHSUNDEEP
c
Kyle
Kyle

Reputation: 177

How to make user input call a function C

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();

Upvotes: 3

Views: 1863

Answers (1)

John3136
John3136

Reputation: 29266

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"

Upvotes: 7

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