Merge 2 Sorted Arrays (without using extra array)

// INPUT : int A[5] = {1,2,5,7,10};
// int B[12] = {0,3,4,6,8,9,13};
// OUTPUT : {0,1,2,3,4,5,6,7,8,9,10,13}

#include<stdio.h>

void mergeArray(int *A,int *B,int m,int n){
//A has m elements, B has n-m elements
int i=m-1,j=n-m-1,k=n-1;
while(i>=0 && j>=0){
if(A[i] > B[j]){
B[k--] = A[i--];
} else {
B[k--] = B[j--];
}
}
if(j<0){
while(i>=0){
B[k--] = A[i--];
}
}
}

int main(){
int A[5] = {1,2,5,7,10};
int B[12] = {0,3,4,6,8,9,13};
int sizeA = sizeof(A)/sizeof(int);
int sizeB = sizeof(B)/sizeof(int);
int i;
mergeArray(A,B,sizeA,sizeB);
for(i=0;i<sizeB;i++){
printf("%d ",B[i]);
}
return 0;
}