Hello I’m working on a quick program that generates a master code and the user has to guess the code. When checking the user’s guess I use 2 functions one for Exact Matches and the other for close matches (where they got a number that’s in the mastercode but not in the right location)
Ex. master code 1 2 3 4
user 2 3 2 4
the output the should show the user has 2 close matches and one exact match. I’m having trouble understanding how to properly return an int.
My ouput just shows the default value of exactMatch and closeMatch when I try to print them in Main. any insight will be greatly appreciated. Thank you.
#include<stdio.h>
#include<math.h>
#include<stdlib.h>
#include<time.h>
#define CODELENGTH 4
#define NUMSYMBOLS 6
int MasterCode[4];
int guess[ 4 ];
int exactMatch;
int closeMatch=0;
void genCode (int MasterCode[])
{
int i=0;
int k;
while (i < CODELENGTH){
MasterCode[i] =rand() %NUMSYMBOLS +1;
i++;
}//end while loop.
for ( k = 0 ; k < 4; k++ ) {
printf( "%d ", MasterCode[ k ] );
}
printf( "\n" );
}
void getGuess (int guess[])
{
int number = 0;
printf( "Please enter your list of 4 numbers between 1 and 6: " );
int j;
int k;
for ( j = 0 ; j < 4; j++ ) {
scanf( "%d", &number );
guess[ j ] = number;
}
printf( "Your array has these values: " );
for ( k = 0 ; k < 4; k++ ) {
printf( "%d ", guess[ k ] );
}
printf( "\n" );
}
int main (int argc, char **argv)
{
srand ( time(NULL) );
genCode(MasterCode);
getGuess(guess);
checkExactMatches(MasterCode, guess, exactMatch);
checkCloseMatches(MasterCode, guess, closeMatch);
printf("%d = Ending exactMatches \n", exactMatch);
printf("%d = Ending closeMatches \n", closeMatch);
}
int checkExactMatches (int MasterCode[], int guess[], int exactMatch )
{
int woot;
for(woot=0; woot<4; woot++){
if (MasterCode[woot] == guess[woot]){
printf("Exact Match found \n");
exactMatch ++;
printf( "%d = Guess \n" , guess[ woot ]);
printf( "%d = MasterCode \n", MasterCode[ woot ]);
printf("%d = exactMatch \n", exactMatch);
}// end if
if (MasterCode[woot] != guess[woot])
printf("No EXACT match \n");
}//end for loop
return exactMatch;
} // end checkExactMatches
int checkCloseMatches (int MasterCode[], int guess[], int closeMatch )
{
int k;
int j;
for(k=0; k<4; k++){
for (j=0; j<4; j++) {
if (MasterCode[k] == guess[j]){
printf("CLOSE Match found \n");
closeMatch ++;
printf( "%d = Guess \n" , guess[ j ]);
printf( "%d = MasterCode \n \n", MasterCode[ k ]);
printf("%d = closeMatch \n \n", closeMatch);
}// end if
if (MasterCode[k] != guess[j])
printf("No CLOSE match \n");
}//end nested for loop
}//end for loop
return closeMatch;
} // end checkCloseMatches
Getting the value returned from a function is actually really easy, it’s basically the same as assigning a value to a variable. In your case, the syntax would be something like this:
result will now hold the value returned by the function.