《軟體工程》個人項目二：增加功能後的四則運算“軟體”

標籤：分享   open   image   void   color   避免   +=   cas   公約數   

要求：

1.支援真分數運算；

2.一次出的題目避免重複；

3.可定製出題數目；

#include<stdio.h>#include<stdlib.h>#include<math.h>#define MAX 100void simple(int &m,int &n) //約去分子分母公約數{int p;p=(m+n-abs(m-n))/2;for(int i=2;i<=p;i++)if(m%i==0&&n%i==0){m/=i;n/=i;i=2;}}void show(int &x,int &y) //輸出整數或分數{if(x%y==0)printf("%d",x/y);elseprintf("%d/%d",x,y);}static int number=0;void judge(int p,int q,int f,int g) //判斷輸入結果的對錯{if(p==f&&q==g){printf("回答正確!\n");number+=1;}elseprintf("回答錯誤!\n");}int main(){FILE *fp;//檔案的開啟if((fp=fopen("mytiku.txt","w"))==NULL){printf("Cannot open this file!\n");exit(0);}for(int i=0;i<MAX;i++){int a,b,c,d,e,f,g,p,q,x,y;int *A=(int *)malloc(MAX*sizeof(int)),*B=(int *)malloc(MAX*sizeof(int));int *C=(int *)malloc(MAX*sizeof(int)),*D=(int *)malloc(MAX*sizeof(int));a=rand()%MAX+1;b=rand()%MAX+1;c=rand()%MAX+1;d=rand()%MAX+1;e=rand()%4+1;simple(a,c);simple(b,d);A[i]=a;B[i]=b;C[i]=c;D[i]=d;//保證沒有重複的題目for(int j=0;j<i;j++)if((A[i]==A[j]&&B[i]==B[j]&&C[i]==C[j]&&D[i]==D[j])||(A[i]==B[j]&&B[i]==A[j])&&C[i]==D[j]&&D[i]==C[j]){a=rand()%MAX+1;b=rand()%MAX+1;c=rand()%MAX+1;d=rand()%MAX+1;simple(a,c);simple(b,d);j=0;}//顯示產生的算式show(a,c);switch(e){case 1: printf("+");break;case 2: printf("-");break;case 3: printf("*");break;case 4: printf("/");break;}show(b,d);printf("=");//對結果進行判斷switch(e){case 1: f=a*d+b*c;g=c*d;simple(f,g);if(g!=1){scanf("%d/%d",&p,&q);simple(p,q);judge(p,q,f,g);}else{scanf("%d",&p);judge(p,1,f,1);}fprintf(fp,"%d/%d+%d/%d=%d/%d\n",a,c,b,d,f,g);break;//減法可能產生負數，要對其進行判斷case 2: f=abs(a*d-b*c);g=c*d;x=a*d;y=b*c;simple(f,g);if(x>=y){if(g!=1){scanf("%d/%d",&p,&q);simple(p,q);judge(p,q,f,g);}else{scanf("-%d",&p);judge(p,1,f,1);}fprintf(fp,"%d/%d-%d/%d=%d/%d\n",a,c,b,d,f,g);}else{if(g!=1){scanf("-%d/%d",&p,&q);simple(p,q);judge(p,q,f,g);}else{scanf("%d",&p);judge(p,1,f,1);}fprintf(fp,"%d/%d-%d/%d=-%d/%d\n",a,c,b,d,f,g);}break;case 3: f=a*b;g=c*d;simple(f,g);if(g!=1){scanf("%d/%d",&p,&q);simple(p,q);judge(p,q,f,g);}else{scanf("%d",&p);judge(p,1,f,1);}fprintf(fp,"%d/%d*%d/%d=%d/%d\n",a,c,b,d,f,g);break;case 4: f=a*d;g=b*c;simple(f,g);if(g!=1){scanf("%d/%d",&p,&q);simple(p,q);judge(p,q,f,g);}else{scanf("%d",&p);judge(p,1,f,1);}fprintf(fp,"%d/%d/%d/%d=%d/%d\n",a,c,b,d,f,g);break;}}fprintf(fp,"做對題目的數目為%d\n",number);fclose(fp);return 0;}

結果：

 

《軟體工程》個人項目二：增加功能後的四則運算“軟體”