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 testGrades[NUM_VALS];
int i;
int sumExtra = -9999; // Assign sumExtra with 0 before your for loop
testGrades[0] = 101;
testGrades[1] = 83;
testGrades[2] = 107;
testGrades[3] = 90;
sumExtra = 0;
for(i = 0; i < NUM_VALS; i++){
if(testGrades[i] > 100){
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;
}