C strings and pointers mitola

[mitola]

C program language:

[code=c]
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iostream>


int main()
{char a[100],b[100],*pa,*pb;
pa = &a; pb = &b;
scanf("%s",*pa) ;
scanf("%s",*pb) ;
printf("vnesi 2 niza / input 2 strings");
printf("\nstrin g: %s",*pa);
printf("string: %s",*pb);
system("pause") ;
return 0;
}
[/code]

well i dont know how to connect string and a pointer

pa = &a; pb = &b; i presume that problem is only here but i cant corect it.

[ilikepython]

C program language:


#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iostream>



int main()
{char a[100],b[100],*pa,*pb;
pa = &a; pb = &b;
scanf("%s",*pa) ;
scanf("%s",*pb) ;
printf("vnesi 2 niza / input 2 strings");
printf("\nstrin g: %s",*pa);
printf("string: %s",*pb);
system("pause") ;
return 0;
}


well i dont know how to connect string and a pointer

pa = &a; pb = &b; i presume that problem is only here but i cant corect it.

Ok, A and B are already pointers so you don't have to get the addresses. If you want a pointer to a char array, you need a pointer to a pointer.

[Banfa]

Ok, A and B are already pointers so you don't have to get the addresses. If you want a pointer to a char array, you need a pointer to a pointer.

No on the whole this is rather wrong!

[Banfa]

This is not wrong
[code=c]pa = &a; pb = &b;[/code]
but this would be more conventional
[code=c]pa = a; pb = b;[/code]
Generally speaking for an array a as you have defined it the a == &a, the only difference is the type of the expression.

However you 1st actual problem is in your scanf lines
[code=c]
scanf("%s",*pa) ;
scanf("%s",*pb) ;
[/code]
%s tells scanf to expect a pointer to char but you pass a char, *pa these should be
[code=c]
scanf("%s",pa);
scanf("%s",pb);
[/code]

And then you make the same mistake in your printf calls
[code=c]
printf("\nstrin g: %s",*pa);
printf("string: %s",*pb);
[/code]
should be
[code=c]
printf("\nstrin g: %s",pa);
printf("string: %s",pb);
[/code]

However on the whole in this program pa and pb are completely superfluous, you could get rid of them and replace them with a and b.