printf multiple variables in one line in C

lqmsh · 02-14-2023, 10:46 PM

I am trying to print two variables in one line from the following code

Code:

#include <stdio.h>

int main() {
    FILE *fptr;
    FILE *fptrr;

    // open a file in read mode
    fptr = fopen("/sys/class/power_supply/BAT0/status", "r");
    fptrr = fopen("/sys/class/power_supply/BAT0/capacity", "r");

    char batstatus[15];
    char batcap[5];
    fgets(batstatus, 15, fptr);
    fgets(batcap, 5, fptrr);

    // format the output string using sprintf
    char output[50];
    sprintf(output, "Bat: %s %s%%", batstatus, batcap);

    printf("%s", output);
    fclose(fptr);
    fclose(fptrr);
    return 0;
}

But it only return in 3 lines. What I am missing?
Thanks in advance.

NevemTeve · 02-14-2023, 11:30 PM

New-line characters should be removed from `batstatus` and `batcap`.

MadeInGermany · 02-16-2023, 04:43 AM

Remove a newline at the end.

Code:

batstatus[strcspn(batstatus, "\n")] = 0;
batcap[strcspn(batcap, "\n")] = 0;
printf("Bat: %s %s%%\n", batstatus, batcap);