c - 从 C 中的文件获取输入

Question

大家好，我尝试将所有城市名称保存在一个数组中，但我无法获得结果，我该怎么做？

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
int main(int argc, char* argv[]){
char**city1,** city2;
int distance,i=0;

city1 = (char**) malloc(sizeof(char*));
city2 = (char**) malloc(sizeof(char*));
    FILE* data;
data = fopen(argv[1],"r");
     //fscanf(data, "%s %s %d", city1,city2, &distance);

city1[0] = (char*)malloc(sizeof(char)*10);
city2[0] = (char*)malloc(sizeof(char)*10);
while(fscanf(data, "%s %s %d",city1[i],city2[i], &distance)!=EOF){
city1[i] = (char*)malloc(sizeof(char)*10);
city2[i] = (char*)malloc(sizeof(char)*10);
printf("%s\n%s\n%d\n", city1[i], city2[i], distance);
i++;}
fclose(data);
return 0;}

Answer 1

您需要在 fscanf() 之前使用第二对 malloc。您正在将输入写入内存的随机部分。