Program 127 #P127 C program File handling : Read from a binary file using fread() Working Code #C256

In simple terms, you read one threeNum record of threeNum size from the file pointed by *fptr into the structure num.

You'll get the same records you inserted in Example 3.
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[RubalSolutions]

Example 4: Read from a binary file using fread()
#include <stdio.h>
#include <stdlib.h>

struct threeNum
{
int n1, n2, n3;
};

int main()
{
int n;
struct threeNum num;
FILE *fptr;

if ((fptr = fopen("C:\\program.bin", "rb")) == NULL){
printf("Error! opening file");

// Program exits if the file pointer returns NULL.
exit(1);
}

for(n = 1; n < 5; ++n)
{
fread(&num, sizeof(struct threeNum), 1, fptr);
printf("n1: %d\tn2: %d\tn3: %d", num.n1, num.n2, num.n3);
}
fclose(fptr);

return 0;
}

[Devendernaturalbeauty]

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