Answer:
I will code in Javascript.
Preconditions:
The variables k, incompletes has been declared and initialized.
The variable nIncompletes contains the number of elements of incompletes.
The variable stududentID has been declared and initialized.
The variable numberOfIncompletes has been declared.
Script:
numberOfIncompletes = 0; <em>//initialize numberOfIncompletes</em>
for( k = 0; k < nIncompletes; k++) {
if(incompletes[k] == studentID){ <em>//if the element of array is equal to studentID</em>
numberOfIncompletes++; <em>//adds 1 to numberOfIncompletes</em>
}
}
Explanation:
The script uses a for loop to go through the entire array incompletes, comparing the k variable with nIncompletes and adding 1 on each pass.
Then inside the for, uses an if statement to compare if the actual element is equal to studentID, if equal adds 1 numberOfIncompletes.
Answer:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main()
{
int arr[100];
int i = 0;
int j = 0;
char c[10];
char temp;
int sum = 0;
FILE* fp;
if ((fp = fopen("test.txt", "r")) == NULL) {
printf("cannot open the file");
return;
}
else {
do {
temp = fgetc(fp);
if (temp == ' ' || temp == '\n') {
c[j] = '\0';
arr[i++] = atoi(c);
j = 0;
continue;
}
c[j++] = temp;
} while (temp != EOF);
for (j = i - 1; j >= 0; j--) {
printf("%d\n", arr[j]);
}
}
getchar();
}
Explanation:
Periodically adding, changing and deleting file records is called file updating. The correct answer is A.
