mengxinayan

// 3-2.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int count_field(const char *line); 
char** get_field_arr(const char *line);

struct student {
    int id;

mengxinayan

// 3-1.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

char* get_field(char *line, int num);
char* remove_quoted(char *str);

struct student {
    int id;

mengxinayan

// 2-2.c
#include <stdio.h>
#include <stdlib.h>

int main()
{
    FILE *fp = fopen("tmp.csv", "w+");
    if (fp == NULL) {
        fprintf(stderr, "fopen() failed.\n");
        exit(EXIT_FAILURE);

mengxinayan

// 2-1.c
#include <stdio.h>
#include <stdlib.h>

int main()
{
    FILE *fp = fopen("tmp.csv", "w+");
    if (fp == NULL) {
        fprintf(stderr, "fopen() failed.\n");
        exit(EXIT_FAILURE);

mengxinayan

// 1-2.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main()
{
    FILE *fp = fopen("tmp.csv", "r");
    if (fp == NULL) {
        fprintf(stderr, "fopen() failed.\n");

mengxinayan

// 1-1.c
#include <stdio.h>
#include <stdlib.h>

int main()
{
    FILE *fp = fopen("tmp.csv", "w+");
    if (fp == NULL) {
        fprintf(stderr, "fopen() failed.\n");
        exit(EXIT_FAILURE);