C-合併兩個遞增數組

給出兩個遞增的整數數組，合併他們後，新數組也是個遞增數組

#include<stdio.h>
int main(){
    int a[5] = {1,4,7,9,11};
    int b[5] = {2,3,5,8,12};
    int c[10];
    int i = 0,j = 0,k=0;
    int a_len = sizeof(a)/sizeof(a[0]);
    int b_len = sizeof(b)/sizeof(b[0]);
    while(i < a_len && j < b_len){
        if(a[i] > b[j]){
            c[k] = b[j];
            j++;
        }else{
            c[k] = a[i];
            i++;
        }
        k++;
    }
    while(i < a_len){
        c[k] = a[i];
        k++;
        i++;
    }
    while(j < b_len){
        c[k] = b[j];
        k++;
        j++;
    }
    for(int n = 0;n < sizeof(c)/sizeof(c[0]); n++){
        printf("%d ",c[n]);
    }
    return 0;
}

輸出
1 2 3 4 5 7 8 9 11 12