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I have to save three different strings in n number of 2D arrays, for that reason I created a 3D array named datosCliente[size][4][size]. After that I have to print their content. But when I'm printing the strings in the first and second string the first character disappear, and the third string isn't printed.

The first string is the name of a country. The second is the date of departure. The last is the date of return.

This is the code:

#include <stdio.h>
#include <stdlib.h>

const int size = 100;

void ingresoDatos(char [size][4][size], int*);
void imprimirDatos(char [size][4][size], int*);

int main(void) {
  char  datosCliente[size][4][size];
  int cant;
  FILE *document;
  document = fopen("data.txt", "a");
  if(document == NULL) {
    printf("Error al abrir el archivo.\n");
  }else {
    ingresoDatos(datosCliente, &cant);
    imprimirDatos(datosCliente, &cant);
  }
  fclose(document);
  return 0;
}

void ingresoDatos(char datos[size][4][size], int *cant) {
  int tam = 0;
  system("clear");
  printf("Ingreso de datos\n");
  do {
    printf("Ingrese el número de clientes: ");
    scanf("%d", &tam);
  }while(tam >= 100 || tam <= 0);
  *cant = tam;
  for(int i = 1; i <= tam; i++) {
    system("clear");
    printf("Ingrese el destino: ");
    fgets(&datos[i][0][0], 20, stdin);
    getchar();
    printf("Ingrese la fecha de salida: ");
    fgets(&datos[i][1][0], 30, stdin);
    getchar();
    printf("Ingrese la fecha regreso: ");
    fgets(&datos[i][2][0], 30, stdin);
    getchar();
  }
}
void imprimirDatos(char datos[size][4][size], int *cant) {
  system("clear");
  for(int i = 1; i <= *cant; i++) {
    printf("Cliente %d:\n", i+1);
    printf("Destino: %s", &datos[i][0][100]);
    printf("Fecha de salida: %s", &datos[i][1][100]);
    printf("Fecha de regreso: %s", &datos[i][2][100]);
    printf("\n");
  }
}

I enter this data:

tam: 1
Destino (to): China
Fecha de salida (depart in): 23 de septiembre de 2022
Fecha de regreso (return in): 24 de noviembre de 2022

And this is the output:

Cliente 1:
Destino: hina
Fecha de salida: 3 de septiembre de 2022
Fecha de regreso:

I had forgotten mention but I'm using Replit to do the code.

DaSe
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1 Answers1

1
  • scanf("%d", &tam); doesn't consume a newline character even if it is entered. (c - fgets doesn't work after scanf - Stack Overflow) In my opinion, you shouldn't mix scanf() and fgets(). You can use fgets() to read a line and sscanf() to parse the line.
  • fgets() consumes a newline character (if it is entered). Calling getchar(); after that will drop the first character of the next line.

Considering these points, the function ingresoDatos should be:

void ingresoDatos(char datos[size][4][size], int *cant) {
  int tam = 0;
  system("clear");
  printf("Ingreso de datos\n");
  do {
    char buffer[100];
    printf("Ingrese el número de clientes: ");
    fgets(buffer, sizeof(buffer), stdin);
    sscanf(buffer, "%d", &tam);
  }while(tam >= 100 || tam <= 0);
  *cant = tam;
  for(int i = 1; i <= tam; i++) {
    system("clear");
    printf("Ingrese el destino: ");
    fgets(&datos[i][0][0], 20, stdin);
    printf("Ingrese la fecha de salida: ");
    fgets(&datos[i][1][0], 30, stdin);
    printf("Ingrese la fecha regreso: ");
    fgets(&datos[i][2][0], 30, stdin);
  }
}
MikeCAT
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