Solution of Queen n problem

#include <stdio.h>
#include <malloc.h>
#include <math.h>
int place(int* paraSolution, int paraT){
	int j;
    for (j = 1; j < paraT; j ++){
        if ((abs(paraT - j) == abs(paraSolution[j] - paraSolution[paraT])) || (paraSolution[j] == paraSolution[paraT]))
            return 0;
    }
    return 1;
}
 
void backtracking(int* paraSolution, int paraN, int paraT){
	int i;
    if (paraT > paraN){
        for (i = 1; i <= paraN; i ++)
            printf("%d ", paraSolution[i]);
		printf("\r\n");
    }else{
        for (i = 1; i <= paraN; i ++){
            paraSolution[paraT] = i;
            if (place(paraSolution, paraT))
                backtracking(paraSolution, paraN, paraT + 1);
        }
    }
}
void nQueen(int paraN){
	int i;
	int* solution = (int*)malloc((paraN + 1) * sizeof(int));
	for (i = 0; i <= paraN; i ++)
		solution[i] = 0;
 
    backtracking(solution, paraN, 1);
}
int main(){
	printf(" Enter the number of queens ：\r\n");
	int n;
	scanf("%d",&n);
	nQueen(n);
	return 0;
}