求两个矩阵之和放在第三个矩阵中 (3行4列)

int a[3][4] = {{1,2,3,4},{5,6,7,8},{9,10,11,12}};
    int b[3][4] = {{1,1,1,1},{2,2,2,2},{3,3,3,3}};
#include <stdio.h>
int main()
{
    int a[3][4] = {{1,2,3,4},{5,6,7,8},{9,10,11,12}};
    int b[3][4] = {{1,1,1,1},{2,2,2,2},{3,3,3,3}};    
    int c[3][4] = { 0 };
    int i, j;
    for(i = 0; i < 3; i++)
    {
        for(j = 0; j < 4; j++)
        {
            c[i][j] = a[i][j] + b[i][j];
            printf("%5d", c[i][j]);
        }
        printf("\n");
    }
}