Searching for a string in a struct - c

Question

The code below is a code that will track my product costs and remaining quantity.The problem I'm facing with is I can't search the code by
if(g[n].name == search[10])
The out put keep showing
"Item not found"
Im a beginner of c language and was hope to learn more. Please correct my code and send it here so that I can know why my code is wrong.
#include <stdio.h>
struct product
{
char name[10];
int quantity;
float costs;
};
void fn_search (struct product g[]);
int main ()
{
int n;
struct product g[4];
strcpy(g[0].name,"aa1");
g[0].quantity = 10;
g[0].costs = 1;
strcpy(g[1].name,"bb2");
g[1].quantity = 10;
g[1].costs = 2;
strcpy(g[2].name,"bb3");
g[2].quantity = 10;
g[2].costs = 3;
fn_search (g);
}
void fn_search (struct product g[10])
{
int n;
char search[10];
printf("Search>> ");
scanf("%s",&search[10]);
for (n=0;n<4;n++)
{
if(g[n].name == search[10])
{
printf ("\ncosts = NTD%.2f",g[n].costs);
printf ("\nquantity = %d\n",g[n].quantity);
}
else
{
printf("\nItem not found.");
break;
}
}
}

Answer 1

Two bugs:
Incorrect use of scanf :
scanf("%s",&search[10]); --> scanf("%9s", search);
Note: scanf("%9s", &search[0]); is also fine but the above is the common way.
Incorrect string compare :
if(g[n].name == search[10]) --> if(strcmp(g[n].name, search) == 0)
Also notice that you never initialized g[3] but fn_search checks it.
Then this part:
else
{
printf("\nItem not found.");
break;
}
means that you break the for loop as soon as an item doesn't match. In other words: Currently you only compare against g[0]
You don't want that! Check all items before printing "Item not found".
So the for loop should be more like:
for (n=0;n<4;n++)
{
if(strcmp(g[n].name, search) == 0)
{
printf ("\ncosts = NTD%.2f",g[n].costs);
printf ("\nquantity = %d\n",g[n].quantity);
return; // Exit function when match is found
}
}
// When execution arrives here, there was no matching element
printf("\nItem not found.");
Finally:
void fn_search (struct product g[10])
^^
why ??
Either do
void fn_search (struct product g[])
or
void fn_search (struct product *g)