C程序将字符串加载到函数内的数组中

Question

so i have this simple program where i have to load values into arrays in another function, have csv file with some data of people randomly generated, separated by ; and need to load into 3 separate arrays

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
//not all necessary just the usual i put at the beggining

int main()
{
char name[100];
char surname[100];
int birth[100];

load_values(name,surname,birth);
}

int load_values(name,surname,birth)
   FILE *data;
   data = fopen("list_of_values.csv","r");
   char letter;
   while(letter = getc(data)) != EOF){ //using this to go trough the file, yes it is quite bad also need help :D
       fgets(data,"%s","%s","d",&name,&surname,&birth) ///reads the file by lines and puts walues into arrays?
   return (name,surname,birth);
}

list_of_values.csv look like this
Tom Brombadil;1997
Joh-Bob Larson;1999
Evan Thompson;1899
//probably the ; will be a problem too :/

expecter result is for the arrays to hold values like:

name[Tom,Joh-Bob,Evan]
surname[Brombadil,Larson,Thompson]
birth[1997,1999,1899]

Answer 1

It seems that you are stuck at this point:

   while(letter = getc(data)) != EOF){ //using this to go trough the file, yes it is quite bad also need help :D
       fgets(data,"%s","%s","d",&name,&surname,&birth) ///reads the file by lines and puts walues into arrays?

getc and fgets work in different ways:

• getc consumes a byte

• fgets consumes a buffer of n bytes

Don't mix them, to scan a line from the csv you want something like:

char buf[1024];

while (fgets(buf, sizeof buf, data))
{
    if (sscanf(buf,"%99s,%99s,%d", name, surname, &birth) != 3)
    {
        fprintf(stderr, "Wrong format. Expected = <string> <string> <int>\n");
        exit(EXIT_FAILURE):
    }
}

Notice that %99s is useful to avoid buffer overflows.

But as pointed out by @SteveSummit in a comment, you have space for only one line in the strings:

char name[100];    // Space for 1 line
char surname[100]; // Space for 1 line
int birth[100];    // Space for 100 lines

If you want to store an array of lines you need another structure, ie a linked list or a dynamic allocated array using realloc .