大整数数相乘的问题

void Multiple(char A[], char B[], char C[]) {

int TMP, In=0, LenA=-1, LenB=-1;

while(A[++LenA] != ‘′);

while(B[++LenB] != ‘′);

int Index, Start = LenA + LenB – 1;

for(int i=LenB-1; i>=0; i–) {

Index = Start–;

if(B[i] != ’0′) {

for(int In=0, j=LenA-1; j>=0; j–) {

TMP = (C[Index]-’0′) + (A[j]-’0′) * (B[i] – ’0′) + In;

C[Index--] = TMP % 10 + ’0′;

In = TMP / 10;

}

C[Index] = In + ’0′;

}

}

}

int main(int argc, char* argv[]) {

char A[] = “21839244444444448880088888889″;

char B[] = “38888888888899999999999999988″;

char C[sizeof(A) + sizeof(B) - 1];

for(int k=0; k C[k] = ’0′;

C[sizeof(C)-1] = ‘′;

Multiple(A, B, C);

for(int i=0; C[i] != ‘′; i++)

printf(“%c”, C[i]);

}