#include"stdio.h"#include"stdlib.h"void main(){int a,b,c,d,e,f,g,t;printf("****************************欢迎使用！************************\n");printf("\n");printf("1.加法运算\n");printf("2.减法运算\n");printf("3.乘法运算\n");printf("4.除法运算\n");printf("*****************************请选择运算类型:");scanf("%d",&a);while(a<1||a>4){printf("输入错误,请重新输入");scanf("%d",&a);}if(a==1){printf("5,一位数加一位数\n");printf("6,一位数加两位数\n");printf("7,两位数加两位数\n");printf("*********************************请输入题型:");scanf("%d",&a);while(a<5||a>7){printf("输入错误,请重新输入");scanf("%d",&a);}if(a==5){loop:b=rand()%10;c=rand()%10;d=b+c;printf("%d+%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);while(e!=d){printf("回答错误，请重做");printf("%d+%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);}printf("回答正确!是否做下一题？\n");printf("输入0表示是，输入1表示否\n");scanf("%d",&f);if(f==0)goto loop;if(f==1)printf("欢迎再次使用！");}if(a==6){loo: b=rand()%10;c=rand()%100;if (c<10) c=c+10;d=b+c;printf("%d+%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);while(e!=d){printf("回答错误，请重做");printf("%d+%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);}printf("回答正确!是否做下一题？\n");printf("输入0表示是，输入1表示否\n");scanf("%d",&f);if(f==0)goto loo;if(f==1)printf("欢迎再次使用！");}if(a==7){loog:b=rand()%100;c=rand()%100;if(c<10) c=c+10;if(b<10) b=b+10;d=b+c;printf("%d+%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);while(e!=d){printf("回答错误，请重做");printf("%d+%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);}printf("回答正确!是否做下一题？\n");printf("输入0表示是，输入1表示否\n");scanf("%d",&f);if(f==0)goto loog;if(f==1)printf("欢迎再次使用！");}}if(a==2){printf("5,一位数减一位数\n");printf("6,两位数减一位数\n");printf("7,两位数减两位数\n");printf("请输入题型:");scanf("%d",&a);while(a<5||a>7){printf("输入错误,请重新输入");scanf("%d",&a);}if(a==5){car: b=rand()%10;c=rand()%10;d=b-c;printf("%d-%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);while(e!=d){printf("回答错误，请重做");printf("%d-%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);}printf("回答正确!是否做下一题？\n");printf("输入0表示是，输入1表示否\n");scanf("%d",&f);if(f==0)goto car;if(f==1)printf("欢迎再次使用！");}if(a==6){truck:b=rand()%100;if(b<10) b=b+10;c=rand()%10;d=b-c;printf("%d-%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);while(e!=d){printf("回答错误，请重做");printf("%d-%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);}printf("回答正确!是否做下一题？\n");printf("输入0表示是，输入1表示否\n");scanf("%d",&f);if(f==0)goto truck;if(f==1)printf("欢迎再次使用！");}if(a==7){boat:b=rand()%100;if(b<10) b=b+10;c=rand()%100;if(c<10) c=c+10;d=b-c;printf("%d-%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);while(e!=d){printf("回答错误，请重做");printf("%d-%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);}printf("回答正确!是否做下一题？\n");printf("输入0表示是，输入1表示否\n");scanf("%d",&f);if(f==0)goto boat;if(f==1)printf("欢迎再次使用！");}}if(a==3){printf("5,一位数乘一位数\n");printf("6,一位数乘两位数\n");printf("7,两位数乘两位数\n");printf("请输入题型:");scanf("%d",&a);while(a<5||a>7){printf("输入错误,请重新输入");scanf("%d",&a);}if(a==5){life:b=rand()%10;c=rand()%10;d=b*c;printf("%d*%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);while(e!=d){printf("回答错误，请重做");printf("%d*%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);}printf("回答正确!是否做下一题？\n");printf("输入0表示是，输入1表示否\n");scanf("%d",&f);if(f==0)goto life;if(f==1)printf("欢迎再次使用！");}if(a==6){shame:b=rand()%100;if(b<10) b=b+10;c=rand()%10;d=b*c;printf("%d*%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);while(e!=d){printf("回答错误，请重做");printf("%d*%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);}printf("回答正确!是否做下一题？\n");printf("输入0表示是，输入1表示否\n");scanf("%d",&f);if(f==0)goto shame;if(f==1)printf("欢迎再次使用！");}if(a==7){yeah:b=rand()%100;c=rand()%100;if(b<10) b=b+10;if(c<10) c=c+10;d=b*c;printf("%d*%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);while(e!=d){printf("回答错误，请重做");printf("%d*%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);}printf("回答正确!是否做下一题？\n");printf("输入0表示是，输入1表示否\n");scanf("%d",&f);if(f==0)goto yeah;if(f==1)printf("欢迎再次使用！");}}if(a==4){printf("5,一位数除一位数\n");printf("6,两位数除一位数\n");printf("7,两位数除两位数\n");printf("请输入题型:");scanf("%d",&a);while(a<5||a>7){printf("输入错误,请重新输入");scanf("%d",&a);}if(a==5){hit: b=rand()%10;c=rand()%10;{if (b>c){g=b%c;if (g!=0){b=b-g;d=b/c;printf("%d/%d=?\n",b,c);}else d=b/c;printf("%d/%d=?\n",b,c);}if (c>b){g=c%b;if (g!=0){c=c-g;t=c;c=b;b=t;d=b/c;printf("%d/%d=?\n",b,c);}elset=c;c=b;b=t;d=b/c;printf("%d/%d=?\n",b,c);}printf("请输入答案：");scanf("%d",&e);}while(e!=d){printf("回答错误，请重做");printf("%d/%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);}printf("回答正确!是否做下一题？\n");printf("输入0表示是，输入1表示否\n");scanf("%d",&f);if(f==0)goto hit;if(f==1)printf("欢迎再次使用！");}if(a==6){haha:b=rand()%100;c=rand()%10;if(b<10)b=b+10;g=b%c;if (g!=0)b=b-g;d=b/c;printf("%d/%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);while(e!=d){printf("回答错误，请重做");printf("%d/%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);}printf("回答正确!是否做下一题？\n");printf("输入0表示是，输入1表示否\n");scanf("%d",&f);if(f==0)goto haha;if(f==1)printf("欢迎再次使用！");}if(a==7){over:b=rand()%100;c=rand()%100;if(b<10) b=b+10;if(c<10) c=c+10;if (b>c){g=b%c;if (g!=0){b=b-g;d=b/c;printf("%d/%d=?\n",b,c);}else{d=b/c;printf("%d/%d=?\n",b,c);}}if (c>b){g=c%b;if (g!=0){c=c-g;t=c;c=b;b=t;d=b/c;printf("%d/%d=?\n",b,c);}else{t=c;c=b;b=t;d=b/c;printf("%d/%d=?\n",b,c);}}scanf("%d",&e);while(e!=d){printf("回答错误，请重做");printf("%d/%d=?\n",b,c);printf("请输入答案：");scanf("%d",&e);}printf("回答正确!是否做下一题？\n");printf("输入0表示是，输入1表示否\n");scanf("%d",&f);if(f==0)goto over;if(f==1)printf("欢迎再次使用！");}}}。