Guillaume-Sanchez
59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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typedef struct student {
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char nom[10];
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int note;
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} eleve;
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int main() {
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int fd, i, ret;
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eleve un_eleve;
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const char *filename = "students.dat"; // Change the filename as needed
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// Open the file for writing (create if it doesn't exist)
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fd = open(filename, O_CREAT | O_WRONLY | O_APPEND, S_IRUSR | S_IWUSR);
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if (fd == -1) {
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perror("prob open");
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return 1;
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}
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// Write student records to the file
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for (i = 0; i < 4; i++) {
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printf("Donnez le nom de l’élève \n");
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scanf("%s", un_eleve.nom);
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printf("Donnez la note de l’élève \n");
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scanf("%d", &un_eleve.note);
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if (write(fd, &un_eleve, sizeof(eleve)) == -1) {
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perror("prob write");
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close(fd);
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return 1;
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}
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}
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// Move to the beginning of the file to read records
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ret = lseek(fd, 0, SEEK_SET);
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if (ret == -1) {
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perror("prob lseek");
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close(fd);
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return 1;
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}
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printf("la nouvelle position est %d\n", ret);
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// Read and display student records
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for (i = 0; i < 4; i++) {
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if (read(fd, &un_eleve, sizeof(eleve)) == -1) {
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perror("prob read");
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close(fd);
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return 1;
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}
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printf("le nom et la note de l’élève sont %s, %d\n",
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un_eleve.nom, un_eleve.note);
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}
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close(fd);
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return 0;
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} |