Question

6. Code writing: There exists an input file named “students.txt” that contains student NetIDs and GPAs. An example is shown on the right; the format is one student per line, with one or more spaces between the NetID and GPA. Write a complete C program that opens this file, inputs the data, and prints the NetID and GPA of every student with a GPA < 2.0; assume the file will open successfully. User-defined functions are not required, and arrays are not necessary because the data does not need to be stored for other purposes.

cobrie  1.98
malbri  3.43
rmaddo  4.00
.

. .

#include <stdio.h>#include <string.h>int main() {

Answer 1

#include <stdio.h>
#include <stdlib.h>

int main() {
    FILE *fp = fopen("students.txt", "r");  // open file
    char netId[100]; // string to read netids
    double gpa; // double to read gpa
    while (fscanf(fp, "%s", netId) != EOF) {    // as long as there is a netId to read
        fscanf(fp, "%lf", &gpa);    // read gpa as well
        if (gpa < 2.0) {    // if gpa is less than 2.0
            printf("%s  %lf\n", netId, gpa);    // then print both netId and gpa
        }
    }
    fclose(fp); // finally close the file
    return 0;
}