CODEWITHSUNDEEP
c
Ayesha Gupta
Ayesha Gupta

Reputation: 5

To detect if the file contains characters other than integers

int main(int argc, char *argv[])
{/*Please ignore extra declarations*/
    FILE *fp;
    int integers[100];
    int value;
    int i = -1;
    char *addr1;
    if ((fp = fopen (argv[1], "r")) == NULL)
    {
        printf("cant open");
        return 1;
    }
    while (!feof(fp) && fscanf(fp, "%d", &value) && ++i < 100)
        integers[i] = value;

    fclose (fp);
    int k;
    k = i;

    int arrlen, processes, j, *pint, number;
    float p;
    arrlen = k;

    printf("Size of array is %d\nThe array is:\n", arrlen);
    for(i = 0; i < k; i++)
    {
        printf("%d\t", integers[i]);
    }
    return 0;
}

I have to read from file into integer array. Also if the file contains any other character apart from integer it should report an error. I was able to do the first part which i have posted above. Please help me with the second part. If the file contains only integers then store it in an array.PS: This is only part of some program. I have to work on the integer array in the program later.

Upvotes: 0

Views: 56

Answers (1)

r-sniper
r-sniper

Reputation: 1483

After reading the input, your fscanf will return 0 if it reads character, which means it wont read until EOF.

Use this after while but before closing fp

if(!(feof(fp) || i==100))
{
    printf("Contains character");
    return 1;
}

Upvotes: 3

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