如何使用fscanf读取文件中的数据

Question

I have a table format in a file. I want to print it using fscanf. The table looks like this with 6 columns and 4 rows.

Name       Date          Opening    Amount     Type             Closing
Thiluxan   21.05.2015    8500       4500       Withdrawal       4000
Black      05.02.2014    7896       6548       Withdrawal       1348
Whitee     02.05.2015    8524       256394     Deposit          264918

FILE *file1;
file1 = fopen("Bank.txt","r");
while(fscanf(file1, "%s %s  %s  %s  %s  %s", text) != EOF ) {
    printf("%s\n", text);
}
fclose(file1);

The output doesn't show anything and it returns a blank screen

Answer 1

As pointed out in answer and comments above, you need to provide six variables into the fscanf arguments. Also it would be better if you have a model for your data. I would suggest to use a struct and input all data into an array of structs , that way you would be able to manage it better rather than managing random variables.

#include <stdio.h>

typedef struct Bank {
    char name[100];
    char date[100];
    char opening[100];
    char amount[100];
    char type[100];
    char closing[100];
} Bank;

int main() {
    FILE *file1;
    file1 = fopen("Bank.txt","r");

    Bank bankList[100];
    int nCustomers = 0;
    while(fscanf(file1, "%s%s%s%s%s%s", bankList[nCustomers].name, bankList[nCustomers].date, bankList[nCustomers].opening, bankList[nCustomers].amount, bankList[nCustomers].type, bankList[nCustomers].closing) != EOF ){
            printf("%s %s %s\n", bankList[nCustomers].name, bankList[nCustomers].date, bankList[nCustomers].opening);
            nCustomers++;
    }
    fclose(file1);
}

Answer 2

Your mistake is the number of variables you passed into fscanf . If you want to read 6 strings you need to provide 6 string variables to save in

Like So

FILE * file1;
file1 = fopen("Bank.txt", "r");
while (fscanf(file1, "%s %s  %s  %s  %s  %s", t1, t2, t3, t4, t5, t6) != EOF) {
    printf("%s %s %s %s %s %s\n", t1, t2, t3, t4, t5, t6);
}
fclose(file1);

You have to instantiate all t s of course