Day 1 Part 1, 2018, C

#include <stdio.h>
int main(int argc, char *argv[])
{
    int freq = 0;
    char text[256];
    int sum = 0;
    FILE *day1;
    if ((day1 = fopen("day1.txt", "r")) == NULL) {
        puts("File could not be found/opened");
    }
    else {
        puts("Opened, processing...");
        while (!feof(day1)) {
           fscanf(day1, "%256s", text);
           freq = atoi(text);
           sum = sum + freq;
        }
        printf("Sum of all freq is:%d ", sum);
        fclose(day1);
    }
    return 0;
}