Question

How to write struct with numbers and string to binary file in C

Answer 1

#include <stdio.h>
  
struct worker
{
    char name[16];
    int age;
    float salary;
}; 
  
int main(int argc, char **argv) 
{ 
    FILE *f;
    struct worker w;
  
    f = fopen("d:\\data.bin", "wb");
    if (!f)
    {
        printf("Unable to open d:\\data.bin");
        return 1;
    }
    for (int i = 1; i <= 3; i++)
    {
        printf("Enter worker name: ");
        gets(w.name);
        printf("Enter worker age: ");
        scanf("%d", &w.age);
        printf("Enter worker salary: ");
        scanf("%f", &w.salary);
        fflush(stdin);
        fwrite(&w, sizeof(struct worker), 1, f);
    }
    
      
    fclose(f);
      
    return(0);
}
  
/*
 
run:
  
Enter worker name: dan
Enter worker age: 34
Enter worker salary: 33874
Enter worker name: rebecca
Enter worker age: 42
Enter worker salary: 31873
Enter worker name: dorothy
Enter worker age: 37
Enter worker salary: 35874
 
*/

 

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