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;
}
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]);