# Finding values in arrays.

Set numMatches to the number of elements in userValues (having NUM_VALS elements) that equal matchValue. Ex: If matchValue = 2 and userValues = {2, 2, 1, 2}, then numMatches = 3.
```#include <stdio.h>

int main(void) {
const int NUM_VALS = 4;
int userValues[NUM_VALS];
int i;
int matchValue;
int numMatches = -99; // Assign numMatches with 0 before your for loop

userValues[0] = 2;
userValues[1] = 2;
userValues[2] = 1;
userValues[3] = 2;

matchValue = 2;

numMatches = 0;
for (i = 0; i < NUM_VALS; i++){
if(matchValue == userValues[i]){
numMatches = numMatches + 1;
}
}

printf("matchValue: %d, numMatches: %d\n", matchValue, numMatches);

return 0;
}```

## Populating an array with a for loop.

Write a for loop to populate array userGuesses with NUM_GUESSES integers. Read integers using scanf. Ex: If NUM_GUESSES is 3 and user enters 9 5 2, then userGuesses is {9, 5, 2}.

```#include <stdio.h>

int main(void) {
const int NUM_GUESSES = 3;
int userGuesses[NUM_GUESSES];
int i;

for(i = 0; i < NUM_GUESSES; i++){
scanf("%d", &userGuesses[i]);
}

for (i = 0; i < NUM_GUESSES; ++i) {
printf("%d ", userGuesses[i]);
}

return 0;
}```

## Array iteration: Sum of excess.

Array testGrades contains NUM_VALS test scores. Write a for loop that sets sumExtra to the total extra credit received. Full credit is 100, so anything over 100 is extra credit. Ex: If testGrades = {101, 83, 107, 90}, then sumExtra = 8, because 1 + 0 + 7 + 0 is 8.
```#include <stdio.h>

int main(void) {
const int NUM_VALS = 4;
int i;
int sumExtra = -9999; // Assign sumExtra with 0 before your for loop

sumExtra = 0;

for(i = 0; i < NUM_VALS; i++){
sumExtra = sumExtra + (testGrades[i] - 100);
}
}

printf("sumExtra: %d\n", sumExtra);
return 0;
}```

## Printing array elements separated by commas.

Write a for loop to print all NUM_VALS elements of array hourlyTemp. Separate elements with a comma and space. Ex: If hourlyTemp = {90, 92, 94, 95}, print:

90, 92, 94, 95

```#include <stdio.h>

int main(void) {
const int NUM_VALS = 4;
int hourlyTemp[NUM_VALS];
int i;

hourlyTemp[0] = 90;
hourlyTemp[1] = 92;
hourlyTemp[2] = 94;
hourlyTemp[3] = 95;

for(i = 0; i < NUM_VALS ; i++){
printf("%d", hourlyTemp[i]);
if (i < NUM_VALS - 1)

printf(", ");
}

printf("\n");

return 0;
}```