i couldn't get why i can't take a character pls help me:(

Question

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

void shiftRightOrLeft(int d[], int size, int n, char direction);
int main() {
int size,n;
char direction;
printf("size:");
scanf("%d",&size);
int d[size];

int i;
printf("dizi elemanlari:");
for(i=0;i<size;i++)
{
scanf("%d",&d[i]);

}
printf("n:");
scanf("%d",&n);
printf("Enter if Left or Right: ");
scanf("%c",&direction);

shiftRightOrLeft( d,size, n,direction);
return 0;
}
void shiftRightOrLeft(int d[], int size, int n, char direction)
{

if(direction=='l')
{
int temp=d[n-1];
int i;
for(i=1;i<size;i++)
{
d[i-1]=d[i];
}
d[size-1]=temp;
int m;
for(m=0;m<size;m++)
{
printf("%d",d[m]);
}

}
else if(0==strcmp(direction,"r"))
{
int temp2=d[size-n];
int i;
for(i=1;i<size;i++)
{
d[i]=d[i-1];
}
d[0]=d[size-n];
}
int k;
for(k=0;k<size;k++)
{
printf("%d",d[k]);
}

}

Answer 1

When prototyping function at the top, you should give return type

Answer 2

Thank you but it doesn't work still i have a problem with character