[問題] 還有一問結果又不如預期了

看板C_and_CPP作者NOtWorThy時間15年前 (2009/04/28 02:54)推噓3(3推 0噓 17→)

留言20則, 6人參與討論串1/2 (看更多)

此題已解如下 #include <iostream> #define max 45 using namespace std; int add(int *a, int *b, int *c, int n){ int i, carry = 0; for(i = n - 1; i >= 0; i--){ c[i] = (int)a[i] + (int)b[i] + carry; if(c[i] < 10) carry = 0; else { c[i] = c[i]%10; carry = 1; } } return carry; } void sub(int *a, int *b, int *c, int n){ int i, borrow = 0; for(i = n - 1; i >= 0; i--){ c[i] = a[i] - b[i] - borrow; if(c[i] >= 0) borrow = 0; else { c[i] = (c[i]+10); borrow = 1; } } } void print_add(int *a, int c){ cout << "add operation:"; !c ? cout << "" : cout << c; for(int i = 0; a[i]!=-1; i++ ) { cout << a[i]; } cout << endl; } void print_sub(int *a, bool large){ cout << "sub operation:"; large ? cout << "" : cout << '-'; for(int i = 0; a[i]!=-1; i++ ) { cout << a[i]; } cout << endl; } int main(){ int N = 0; /* 用來計運算元的位數 */ int M = 0; char array_a[max]; int temp_a[max]; char array_b[max]; int temp_b[max]; int array_c[max]; for(int i = 0; i < max; i++) { temp_a[i] = -1; temp_b[i] = -1; array_c[i] = -1; } char read; cout << "請輸入兩整數:" ; cin >> array_a; for(;array_a[N]!='\0';N++) {} cin >> array_b; for(;array_b[M]!='\0';M++) {} /* cout << "N = " << N << " M = " << M << endl; */ cout << "number_1:"; for(int i = 0; i < N; i++) { cout << (int)array_a[i] - '0'; temp_a[i] = (int)array_a[i] - '0'; } cout << endl; cout << "number_2:" ; for(int i = 0; i < M; i++) { cout << (int)array_b[i] - '0'; temp_b[i] = (int)array_b[i] - '0'; } cout << endl; int c = 0, delta = 0; if(N > M){ delta = N - M; int j; for(int j = N-1; j >= 0; j--){ if(j >= delta) temp_b[j] = temp_b[j-delta]; else temp_b[j] = 0; } c = add(temp_a, temp_b, array_c, N); print_add(array_c, c); sub(temp_a, temp_b, array_c, N); print_sub(array_c, true); } else if (M > N){ delta = M - N; int j; for(int j = M-1; j >= 0; j--){ if(j >= delta) temp_a[j] = temp_a[j-delta]; else temp_a[j] = 0; } c = add(temp_b, temp_a, array_c, M); print_add(array_c, c); sub(temp_b, temp_a, array_c, M); print_sub(array_c, false); } else { c = add(temp_b, temp_a, array_c, M); print_add(array_c, c); (temp_a[0] > temp_b[0]) ? sub(temp_a, temp_b, array_c, N) : sub(temp_b, temp_a, array_c, N); (temp_a[0] > temp_b[0]) ? print_sub(array_c, true) : print_sub(array_c, false); } system("pause"); return 0; } 執行結果目前TEST都OK 謝謝大家幫忙再次感謝 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.113.91.18

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redluna

04/28 09:30, , 1^F

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NOtWorThy

04/28 10:08, , 2^F

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evernever

04/28 10:09, , 3^F

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