Proba 3
Never
#define _CRT_SECURE_NO_WARNINGS #include <stdio.h> #include <stdlib.h> #include <string.h> typedef struct { char name[20]; char surname[20]; int year; int matura; }Student; void showbinary(FILE *inb) { fseek(inb, 0, SEEK_SET); Student x; while (1) { fread(&x, sizeof(Student), 1, inb); if (feof(inb)) { break; } printf("%s %s %d %d\n", x.name, x.surname, x.year, x.matura); } return; } void update(FILE *inb, FILE *in) { fseek(inb, 0, SEEK_SET); Student x; char a[15]; while (1) { fread(&x, sizeof(Student), 1, inb); if (feof(inb)) { break; } fscanf(in, "%s", &a); if (strcmp(a, "odlican") == 0 || strcmp(a, "vrlo_dobar") == 0 || strcmp(a, "dobar") == 0 || strcmp(a, "dovoljan") == 0) { if (x.year == 4) { x.matura = 1; } else { x.year += 1; } } fseek(inb, (-1)*(signed)sizeof(Student), SEEK_CUR); fwrite(&x, sizeof(Student), 1, inb); fseek(inb, 0, SEEK_CUR); } return; } int main(void) { FILE *in, *inb; in = fopen("input2.txt", "r"); inb = fopen("ucenici.bin", "rb+"); update(inb, in); showbinary(inb); fclose(in); fclose(inb); printf("\n"); system("pause"); return 0; }
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