[c]matrice di caratteri

[Zero Two]

questo programma:

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

#define SIZE 100

void carmat (char mat[][SIZE],int r,int c){
     int i,j;
     for (i=0;i<r;i++){
         for (j=0;j<c;j++){
             printf ("inserire elemento %d,%d\n",i,j);
             scanf ("%c%*c",&mat[i][j]);

         }
     }
}



void stamat (char mat[][SIZE],int r,int c){
     int i,j;
     for (i=0;i<r;i++){
         for (j=0;j<c;j++){
             printf ("%c ",mat[i][j]);
         }
     printf ("\n");
     }
}


int main(){
    char mat[SIZE][SIZE];
    int r,c;
    
    
    printf ("righe?\n");
    scanf ("%d",&r);
    printf ("colonne?\n");
    scanf ("%d",&c);
    
    carmat(mat,r,c);
    stamat(mat,r,c);
    
    system ("pause");
    return 0;
    
}

Ma mi stampa tutto nero...come mai?