传递闭包计算warshall算法C语言实现

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

#define N 3
#define TRUE 0

int get_matrix(int a

)
{
int i = 0,j = 0;
for (i = 0;i < N;i++) {
for (j = 0;j < N;j++) {
scanf("%d",&a[i][j]);
if (a[i][j] != 0 && a[i][j] != 1) {
printf("0 or 1 in matrix\n");
exit(2);
}
}
}
return TRUE;
}

int output_matrix(int a

)
{
int i = 0,j = 0;
for (i = 0;i < N;i++) {
for (j = 0;j < N;j++) {
printf("%d  ",a[i][j]);
}
putchar('\n');
}
return TRUE;
}

int warshall(int a

)
{
int col = 0;
int line = 0;
int temp = 0;

for (col = 0;col < N;col++) {
for (line = 0;line < N;line++) {
if (a[line][col] != 0) {
for (temp = 0;temp < N;temp++) {
a[line][temp] = a[line][temp] | a[col][temp];
}
}
}
}
return TRUE;
}

int main(void)
{
int a

= {0};

printf("please input a matrix with %d * %d:\n",N,N);
if (get_matrix(a)) {
printf("get matrix error!\n");
exit(1);
}

warshall(a);

output_matrix(a);

return 0;
}