mismatch with types in functions

shifter · 09-13-2012, 10:35 AM

Hi all, I did a little program in c language.
It works, but I have a following warning message:

Code:

prova2.c:28:6: warning: conflicting types for ‘insert’ [enabled by default]
prova2.c:15:3: note: previous implicit declaration of ‘insert’ was here
prova2.c:39:6: warning: conflicting types for ‘view’ [enabled by default]
prova2.c:16:3: note: previous implicit declaration of ‘view’ was here

The alert is in corrispondence of two functions, insert and view.
What is the problem?

The code of my program is following:

Quote:

#include <stdio.h>

#define SIZE 50

int main() {

int i, choice, dim, elem;
char c;
int vett[SIZE];

printf("Inserisci la dimensione del vettore (ricorda che deve essere un vettore di massimo 20 elementi): ");
scanf("%d", &dim);
insert(&vett, dim);
view(&vett, dim);
return 0;

}

int read(int v[], int i) {

return(v[i]);

}

void insert(int v[], int dim) {

int i;

printf("Inserisci i caratteri nel vettore:\n");
for (i=0; i<dim; i++) {
scanf("%d",&v[i]);
}

}

void view(int v[], int dim) {

int i;

for (i=0; i<dim; i++)
printf("Elemento %d del vettore: %d\n", i+1, v[i]);

}

Thank you in advance for answers.

johnsfine · 09-13-2012, 12:27 PM

Quote:

Originally Posted by shifter

Hi all, I did a little program in c language.

1) use CODE tags, not QUOTE tags when posting code.

2) pre declare functions (see bold lines in the following version of your code)

Code:

#include <stdio.h>

int read(int v[], int i);
void insert(int v[], int dim);
void view(int v[], int dim);

#define SIZE 50


int main() {

  int i, choice, dim, elem;
  char c;
  int vett[SIZE];

  printf("Inserisci la dimensione del vettore (ricorda che deve essere un vettore di massimo 20 elementi): ");
  scanf("%d", &dim);
  insert(&vett, dim);
  view(&vett, dim);
  return 0;


}

int read(int v[], int i) {

  return(v[i]);

}

void insert(int v[], int dim) {

  int i;

  printf("Inserisci i caratteri nel vettore:\n");
  for (i=0; i<dim; i++) {
    scanf("%d",&v[i]);
  }

}

void view(int v[], int dim) {

  int i;

  for (i=0; i<dim; i++)
    printf("Elemento %d del vettore: %d\n", i+1, v[i]);

}

shifter · 09-13-2012, 12:51 PM

Ok, now it works.

Thank you very much!