2D ARR row col shifter

#include <stdio.h>
int fill(int rows,int cols,int arr[rows][cols]){

 for(int i=0;i<rows;i++){
    for(int j=0;j<cols;j++){
    printf("Fill the indicie %dx%d\n",i ,j);
    scanf("%d", &arr[i][j]);
    }
 }
   int userchoice=choice();
   if(userchoice == 1)
    rowswap(rows,cols,arr);

   else
    colswap(rows,cols,arr);
}
int choice(){
int choice=0;
do{
    puts("1 to swap rows");
    puts("2 to swap cols");
    scanf("%d", &choice);
}
while(choice != 1 && choice !=2);
return choice;
}
void colswap(int rows,int cols, int arr[rows][cols]){
puts("PreSwap");
        for(int i=0;i<rows;i++){
            for(int j=0;j<cols;j++){
                printf("%d ", arr[i][j]);
        }
        puts(""); }
            int swap1,swap2;
            printf("Enter two cols to swap 0-%d", cols-1);
            scanf("%d%d", &swap1, &swap2);
            for(int j=0;j<rows;j++){
                int temp=arr[j][swap1];
                arr[j][swap1] = arr[j][swap2];
                arr[j][swap2] = temp;
            }
            for(int m=0;m<rows;m++){
            for(int n=0;n<cols;n++){
                printf("%d ", arr[m][n]);
            }
            puts("");}
            char str[5] = "cols";
            char newstr[5];
            int k=0;
            puts("Enter ""cols"" if you want to swap rows, exit to end program");
            scanf("%s", newstr);
            for(int i=0;i<4;i++){
            if(str[i]==newstr[i])
                k++;
            }
            if(k==4)
                rowswap(rows, cols, arr);
                else
                    return 0;
}
int rowswap(int rows, int cols, int arr[rows][cols]){
    puts("PreSwap");
    for(int a=0; a<rows;a++){
        for(int b=0;b<cols;b++){
    printf("%d ", arr[a][b]);
        }
        puts("");
    }
        puts("");
        printf("Enter two rows to swap 0-%d\n", rows-1);
        int swap1, swap2;
        scanf("%d%d", &swap1,&swap2);

        for(int i =0;i<cols;i++){
            int temp = arr[swap1][i];
        arr[swap1][i] = arr[swap2][i];
        arr[swap2][i] = temp;

        }
        puts("PostSwap");
        for(int i=0;i<rows;i++){
            for(int j=0;j<cols;j++){
            printf("%d ", arr[i][j]);
            }
        puts("");
        }
        puts("Enter cols to swap cols, exit to end the program");
        int k=0;
        char str[5]= "cols";
        char strnew[5];
        scanf("%s", strnew);
        for(int w=0;w<4;w++){
            if(strnew[w]==str[w])
                k++;
        }
        if(k==4)
            colswap(rows,cols,arr);
        else
            return 0;
}

int main(){
puts("Enter the dimenssions of the arr");
int rows, cols;
scanf("%d %d", &rows, &cols);
int arr[rows][cols];
fill(rows, cols, arr);
return 0;
}