Finding Items in Struct and edit them - c

Question

i have a problem in my code (Case 2), I try to get the position of the item what I get from the scanf() but when I try to get the position it give me a complete random number like 537890.
I can't figure out why my code do that, because the max size of my struct ist 200.
I'm not sure if its because I tried to do &find==wh[a]->artikel
int main() {
struct managementtool {
char artikel[200];
int anzahl;
};
//wh = warehouse
struct managementtool **wh = malloc(200 * sizeof(struct managementtool *));
for (int i = 0; i < 200; i++) {
wh[i] = malloc(sizeof(struct managementtool));
}
printf("Welcome to Warehouse Management 97\n\n\nWhat do you want to do ?\n");
int x,v,f,i,exit,all,end,a,b;
char ques,find, nu1;
do {
i=0;
printf("\n(1)Add article\n(2)Edit article.\n(3)Search entry.\n(4)Show stock.\n(5)Exit\n");
scanf("%x",&x);
switch (x) {
case 1://add
do {
printf("\nEnter the product name: ");
scanf("%s", wh[f]->artikel);
printf("\nAmount of products: ");
scanf("%i", &wh[f]->anzahl);
printf("\n\nAdd another product ? (Y/N)");
// add a space before % to skip leading whitespace
scanf(" %c", &ques);
f++;
switch (ques) {
case 'Y':
v++;
break;
case 'N':
end = 1;
v = 0;
break;
default:
printf("Wrong entry\n");
break;
}
} while (end != 1);
if (v >= 2) {
printf("Product added successfully\n\n");
}else {
printf("Products have been successfully added\n\n");
}
break;
case 2://edit
printf("Which article do you want to edit?");
fflush(stdin);
scanf("%s", &find);
for (a=0;a<f;a++) {
if (&find==wh[a]->artikel) {
b=a;
}
}
if (b==0) {
printf("Article not found");
}
printf("f: %i, b:%i",f,b);
puts(wh[b]->artikel);
printf("Amount: %d\n", wh[b]->anzahl);
break;
case 3://search
break;
case 4://Spam-it
while (i<f) {
printf("\nProduct number %i\n", i+1);
printf("Name: ");
puts(wh[i]->artikel);
printf("Amount: %d\n", wh[i]->anzahl);
i++;
}
printf("\nTotal amount of Items: %i", all);
break;
case 5://go away
printf("Goodbye :)");
exit=1;
break;
default://well
printf("Wrong Input\n");
break;
}
all=0;
while (i<f) {
all += wh[i]->anzahl;
i++;
}
} while (exit==0);
}

Answer 1

In C you need to use strcmp instead of using == to compare strings. You should also use fgets instead of scanf it will make your life easier, you don't have to worry about trying to flush. Example : fgets( my_string_buffer, number_of_char_maximum_to_read , stdin ) . Example for strcmp : if(! strcmp( string1 , string2) , strcmp returns 0 if they are identical.