Aus meiner Wühlkiste, nur dein Array eingebaut:
#include <Streaming.h> // die Lib findest du selber ;-)
Print &cout = Serial; // cout Emulation für "Arme"
int numbers[] {1, 2, 3, 4, 5};
char buchstaben[] {'c','n','5','t','h'};
struct Result
{
bool found;
unsigned cell;
};
template<typename T, size_t N> Result findInArray(T (&haystack)[N], T needle)
{
for (unsigned i=0; i<N;i++) if (haystack[i] == needle) return{true,i};
return{false,0};
}
void setup()
{
Serial.begin(9600);
cout << F("Start: ") << F(__FILE__) << endl;
Result res;
res = findInArray(numbers,33);
if(res.found) cout << "Zellenindex: " << res.cell << endl;
else cout << "nix mit 33 " << endl;
res = findInArray(numbers,2);
if(res.found) cout << "Zellenindex: " << res.cell << endl;
else cout << "nix mit 2 " << endl;
res = findInArray(numbers,3);
if(res.found) cout << "Zellenindex: " << res.cell << endl;
else cout << "nix mit 3 " << endl;
res = findInArray(buchstaben,'c');
if(res.found) cout << "Zellenindex: " << res.cell << endl;
else cout << "nix mit c " << endl;
}
void loop()
{
}