将CSV文本文件中的值输入到数组中

时间:2014-03-10 11:36:48

标签: c arrays csv

出于某种原因,我的程序在第一个while循环中混乱,但我真的不明白为什么。昨天我使用stdin的标准重定向输入,我假设打开一个文件基本上是一回事。为什么现在不工作?

这是我保存为“.csv”的文本文件,我正在打开它:

热狗,10,2,1.50 bun,10,2,0.50 汉堡,100,10,2.00

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

int main(int argc, char *argv[])
{
    int i = 0, j = 0;
    char command[25], str[100];
    int quantity[100], limit[100];
    double cost[100];
    char *item[100];
    char *token, *ptr;

    FILE *fp = fopen("inventory.csv", "rw");
    if(fp == NULL)
    {
        perror ("Error opening file");
    }

    //testing to see if program gets until here, then tries to copy data from CSV to arrays
    while(fgets(str, 100, fp) != NULL)
    {
        token = strtok (str,",");
        ptr = strdup(token);
        item[i] = ptr;
        sscanf (token, "%s", item[i]);
        token = strtok (NULL,",");
        sscanf (token, "%d", &quantity[i]);
        token = strtok (NULL,",");
        sscanf (token, "%d", &limit[i]);
        token = strtok (NULL,"\n");
        sscanf (token, "%lf", &cost[i]);
        i++;
    }

    printf("hey");

    for(j=0;j<i;j++)
        {
            printf("%s, %d, %d, %lf\n", item[j], quantity[j], limit[j], cost[j]);
        }

    strcpy(command, argv[1]);

    if(strcmp(command,"list") == 0)
    {
        for(j=0;j<i;j++)
        {
            printf("%s, %d, %d, %lf\n", item[j], quantity[j], limit[j], cost[j]);
        }
    }
    else
    {
        printf("wtf hello");
    }
    return 0;
}

1 个答案:

答案 0 :(得分:3)

在以下语句中,应该给出条目的sscanf地址

sscanf(令牌,“%d”,&amp; quantity [i]);

sscanf(令牌,“%d”,&amp; limit [i]);

sscanf(令牌,“%lf”,&amp; cost [i]);