How to find out the position of an array

[kk84]

Hi all, Im doing a program to store student data. I initialise a Structure and a student array of 50. like

Stdinfo Student[50];

Let say if I store a name Johnson in Student[45], how can I find out the position of the array which store the name Johnson?

any advice will be appreciated.

[Zaita]

you have to iterate through the array until you find it. Unless your array is sorted by name, the you can use a binary search etc. There is no magic way.

[bnbertha]

Just to add a simple example of what Zaita is talking about

int pos = -1;
for (int i = 0; i < 50 && pos == -1; i++)
{
    // Assuming there is a char[] field called name in Stdinfo
    if (strcmp(Student[i].name, "Johnson") == 0)
    {
        pos = i;
    }
}
// variable pos is now set to the array index of Johnson if Johnson exists
// otherwise it will stay at -1 

[kk84]

Thanks lots guys