scanf from console and fscanf from file - printf

Question

I got some problems about scanf from console,
I wrote some codes about it and found that it could not read all the input and automatically close after typing first character.
int readLetterGridFromConsole(char letterGrid[MAX_GRID][MAX_GRID]) {
int row, col;
int gridSize;
printf("Enter the size of the letter grid:\n");
scanf("%d", &gridSize);
if(gridSize < 2 || gridSize > MAX_GRID) {
printf("DEBUG: gridSize is %d but not between 2 and %d\n", gridSize, MAX_GRID);
printf("Program terminates.\n");
exit(1);
} else {
printf("Enter the letter grid:\n");
for(row = 0; row < gridSize; row++) {
for(col = 0; col < gridSize; col++) {
scanf(" %c", &letterGrid[row][col]);
}
}
return gridSize;
}
}
I would like to store these input in the 2D array ( letterGrid )
how could I solve this problem? Thanks for help!

Answer 1

But it works for me.
I define a 2-D array char x[MAX_GRID][MAX_GRID]; then pass it to function, then scan input then store them in the x matrix.
Code
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#define MAX_GRID 2
int readLetterGridFromConsole(char letterGrid[MAX_GRID][MAX_GRID]) {
int row, col;
int gridSize;
printf("Enter the size of the letter grid:\n");
scanf("%d", &gridSize);
if(gridSize < 2 || gridSize > MAX_GRID) {
printf("DEBUG: gridSize is %d but not between 2 and %d\n", gridSize, MAX_GRID);
printf("Program terminates.\n");
exit(1);
} else {
printf("Enter the letter grid:\n");
for(row = 0; row < gridSize; row++) {
for(col = 0; col < gridSize; col++) {
scanf(" %c", &letterGrid[row][col]);
}
}
//return gridSize;
}
/*
printf("Lettr grid\n\n");
for(row = 0; row < gridSize; row++) {
for(col = 0; col < gridSize; col++) {
printf("%c", letterGrid[row][col]);
}
}
*/
}
int main()
{
char x[MAX_GRID][MAX_GRID];//={{1,2},{3,4}};
readLetterGridFromConsole(x);
printf("after function\n\n\n");
for(int row = 0; row < MAX_GRID; row++) {
for(int col = 0; col < MAX_GRID; col++) {
printf("%c", x[row][col]);
}
}
return 0;
}
Compile and Run
gcc -Wall -Wextra -pedantic-errors code.c -o code
Output
Enter the size of the letter grid:
2
Enter the letter grid:
a
b
c
d
after function
abcd
Consider as array in c pass by reference it can hold values even outside of function readLetterGridFromConsole(x);