C语言课程设计小学生四则运算

#include"stdio.h"#include"stdlib.h"voidmain(){inta,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("回答对的!与否做下一题？\n"); printf("输入0表达是，输入1表达否\n"); scanf("%d",&f); if(f==0) gotoloop; 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("回答对的!与否做下一题？\n"); printf("输入0表达是，输入1表达否\n"); scanf("%d",&f); if(f==0) gotoloo; 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("回答对的!与否做下一题？\n"); printf("输入0表达是，输入1表达否\n"); scanf("%d",&f); if(f==0) gotoloog; 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("回答对的!与否做下一题？\n"); printf("输入0表达是，输入1表达否\n"); scanf("%d",&f); if(f==0) gotocar; 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("回答对的!与否做下一题？\n"); printf("输入0表达是，输入1表达否\n"); scanf("%d",&f); if(f==0) gototruck; 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("回答对的!与否做下一题？\n"); printf("输入0表达是，输入1表达否\n"); scanf("%d",&f); if(f==0) gotoboat; 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("回答对的!与否做下一题？\n"); printf("输入0表达是，输入1表达否\n"); scanf("%d",&f); if(f==0) gotolife; 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("回答对的!与否做下一题？\n"); printf("输入0表达是，输入1表达否\n"); scanf("%d",&f); if(f==0) gotoshame; 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("回答对的!与否做下一题？\n"); printf("输入0表达是，输入1表达否\n"); scanf("%d",&f); if(f==0) gotoyeah; 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); } elsed=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); } 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("回答对的!与否做下一题？\n"); printf("输入0表达是，输入1表达否\n"); scanf("%d",&f); if(f==0) gotohit; 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("回答对的!与否做下一题？\n"); printf("输入0表达是，输入1表达否\n"); scanf("%d",&f); if(f==0) gotohaha; if(f==1)printf("欢迎再次使用！"); }if(a==7) {over:b=rand()%100;c=ra