程序代码：

#include <stdio.h>

int isSuShu(int nbr);

int main(int argc, char *argv[])
{
    int suShu_index = 0;
    int suShu[100];

    for(int i = 2; i<100; i++){
        if(isSuShu(i)){
            suShu[suShu_index] = i;
            suShu_index++;
        }
    }
    int nbr_of_suShu = 0;
    for(int i = 6; i<100; i++){
        if(i % 2 != 0)
            continue;
        for(int p = 0; p < suShu_index; p++){
            for(int q = 0; q < suShu_index; q++){
                if(suShu[p] + suShu[q] == i){
                    printf("%d = %d + %d  ,",i,suShu[p],suShu[q]);
                    goto LI;
                }
            }
        }
        LI:
        nbr_of_suShu++;
        if(nbr_of_suShu % 5 == 0)
            printf("\n");
    }

    return 0;
}

int isSuShu(int nbr){

    if(nbr<2)
        return 0;
    else if (nbr == 2)
        return 1;

    int b = 2;
    while(b <= ( (int) nbr / 2)){
        if(nbr % b == 0)
            return 0;
        b++;
    }
    return 1;
}