Can we take input from user globally in c

Question

If yes can u say me how it is possible

Answer 1

Maybe you are thinking of a function pointer. This compiles without error in C, and on SoloLearn it prompts you for input without any reference to x in main(). Other compilers likely would optimize and remove matr_size() and x as unreachable/unused code.

int (*x)()=&matr_size;
int main() {
//printf("%d", x());
return 0;
}

Answer 2

Every code must be inside main function. If you mean this,
int x;
scanf ( x ); // is not allowed
main()
{
printf (x);
}
it is not possible.

Answer 3

K thanks for ur explanation

Answer 4

Brian thaks for ur code

Answer 5

Can't we even take through pointers by using dynamic memory allocation I have seen this in some articles I haven't got the complete information there

Answer 6

https://code.sololearn.com/cYc1bVa4U2FS/?ref=app
But the code is not working

Answer 7

Can I know why it is not compiling

Answer 8

Is there any way to do that in C

Answer 9

~ swim ~ k thanks

Answer 10

By the way,it has out put such as ....global input-0
https://code.sololearn.com/cMuf0v4QDyqi/?ref=app

Answer 11

#include <stdio.h>
int sum=0;
int main()
{
int a;
scanf("%d",&a);
sum=a;
printf("%d",sum);
return 0;
}

Answer 12

Mas Has thaks for the code

Answer 13

Santosh kr Pathak thanks for the code

Answer 14

Fro string you have to change
Int a;
By char name[];
And %d as %s

Answer 15

Yes dear you can as you just uploade your codes on this aap. And type the following code
#include<studio.h>
Int main()
{
Int a
Scanf("%d\n",&a);
Printf ("you have enter the interger value a as %d\n",a);

return 0;
}

Answer 16

Jayesh Sharma but it is not globally declared right

Answer 17

Dear friend you are correct but this aap is for global people so they can refer it

Answer 18

You may find answer in https://www.dummies.com/programming/c/basics-of-global-variables-in-c-programming/, and you may browse through https://www.codingunit.com/c-tutorial-functions-and-global-local-variables, https://www.google.com/search?, https://stackoverflow.com/questions/35744589/how-to-create-a-global-variable-using-user-input.