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| #include <stdlib.h>
#include <stdio.h>
#define MAX_C_PER_LINE 100
typedef struct LineRecord {
double items[6];
} LineRecord_s;
int nextline(FILE * f_in, LineRecord_s * record) {
int rc = 0;
if (f_in && record) {
int nbRead;
char line[MAX_C_PER_LINE+1] = { '\0' };
if (fgets(line, sizeof(line)/sizeof(*line), f_in) != NULL) {
nbRead = sscanf(line,
"%lf %lf %lf %lf %lf %lf",
& record->items[0], & record->items[1],
& record->items[2], & record->items[3],
& record->items[4], & record->items[5]);
if (nbRead == 6) { rc = 1;}
}
}
return rc;
}
void putRecordOnStream(const LineRecord_s * record, FILE * f_out) {
if (record && f_out) {
fprintf(f_out,
"[1]: %lf [2]: %lf [3]: %lf [4]: %lf [5]: %lf [6]: %lf\n",
record->items[0], record->items[1],
record->items[2], record->items[3],
record->items[4], record->items[5]);
}
}
int main(void)
{
FILE * f_in = NULL;
LineRecord_s record;
f_in = fopen("test.dat","r");
if (!f_in) {
fprintf(stderr, "Failed to open test.dat\n");
exit(EXIT_FAILURE);
}
while(nextline(f_in, &record)) {
putRecordOnStream(&record, stdout);
}
fclose(f_in);
return 0;
} |
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