主程序里边调用了一个矩阵相乘的程序，两个单位矩阵相乘，结果应该得到一个单位矩阵，但是计算的结果很奇怪，求各位高手解答

#include <stdio.h>
void matproduct(float a2[3][3],float b2[3][3],float c2[3][3]);

int main()
{
int i;
float s[3][3];
float a[3][3]={{1.0,0.0,0.0},{0.0,1.0,0.0},{0.0,0.0,1.0}};
float b[3][3]={{1.0,0.0,0.0},{0.0,1.0,0.0},{0.0,0.0,1.0}};

matproduct(a,b,s);

for(i=0;i<3;i++)
printf("%d %d %d \n",s[i][1],s[i][2],s[i][3]);

return 0;
}

void matproduct(float a2[3][3],float b2[3][3],float c2[3][3])      //对矩阵进行乘法运算，结果存储到c矩阵中
{int i1,j1;
 for (i1=0;i1<3;i1++)
     for (j1=0;j1<3;j1++)
         {c2[i1][j1]=a2[i1][0]*b2[0][j1]+a2[i1][1]*b2[1][j1]+a2[i1][2]*b2[2][j1];}
}

问题搞清楚了 应该用%f 输出 而不是用%d