8.c


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#include <stdlib.h>
#include <stdio.h>
#include <string.h>

static char *ReadLine(char *p, size_t size, FILE *fp)
{
    if ((p=fgets(p, size, fp)))
    {
        size_t l = strlen(p);

        while(l && p[l-1] == '\n')
        {
            p[--l] = 0;
        }
    }

    return p;
}

int main(void)
{
    char buff[0x8000];
    char *signal[10] = {0};
    char *digit[4] = {0};
    int sum = 0;
    int f = 0;

    while(ReadLine(buff, sizeof buff, stdin))
    {
        for(f = 0; f < 10; f++)
        {
            signal[f] = strtok(f == 0 ? buff : NULL, " |");
        }

        for(f = 0; f < 4; f++)
        {
            size_t len;

            digit[f] = strtok(NULL, " |");

            len = strlen(digit[f]);

            if (len == 2 || len == 4 || len == 3 || len == 7)
            {
                sum++;
            }
        }
    }

    printf("sum = %d\n", sum);

    return 0;
}