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Use descriptive loop index names in Multidimensional Arrays exercise #887

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Use descriptive loop index names in Multidimensional Arrays exercise #887

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26 changes: 13 additions & 13 deletions tutorials/learn-c.org/en/Multidimensional Arrays.md
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Original file line number Diff line number Diff line change
Expand Up @@ -75,8 +75,8 @@ Tutorial Code
int main() {
/* TODO: declare the 2D array grades here */
float average;
int i;
int j;
int subjectIndex;
int studentIndex;

grades[0][0] = 80;
grades[0][1] = 70;
Expand All @@ -91,14 +91,14 @@ Tutorial Code
grades[1][4] = 87;

/* TODO: complete the for loop with appropriate terminating conditions */
for (i = 0; i < ; i++) {
for (subjectIndex = 0; subjectIndex < ; subjectIndex++) {
average = 0;
for (j = 0; j < ; j++) {
average += grades[i][j];
for (studentIndex = 0; studentIndex < ; studentIndex++) {
average += grades[subjectIndex][studentIndex];
}

/* TODO: compute the average marks for subject i */
printf("The average marks obtained in subject %d is: %.2f\n", i, average);
/* TODO: compute the average marks for the current subject */
printf("The average marks obtained in subject %d is: %.2f\n", subjectIndex, average);
}

return 0;
Expand All @@ -119,8 +119,8 @@ Solution
int main() {
int grades[2][5];
float average;
int i;
int j;
int subjectIndex;
int studentIndex;

grades[0][0] = 80;
grades[0][1] = 70;
Expand All @@ -134,15 +134,15 @@ Solution
grades[1][3] = 82;
grades[1][4] = 87;

for (i = 0; i < 2; i++) {
for (subjectIndex = 0; subjectIndex < 2; subjectIndex++) {
average = 0;

for (j = 0; j < 5; j++) {
average += grades[i][j];
for (studentIndex = 0; studentIndex < 5; studentIndex++) {
average += grades[subjectIndex][studentIndex];
}

average /= 5.0;
printf("The average marks obtained in subject %d is: %.2f\n", i, average);
printf("The average marks obtained in subject %d is: %.2f\n", subjectIndex, average);
}

return 0;
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