c语言问题 请问如何随机产生加减乘除任意一种运算符号呢答:include <stdlib.h>#include int main(){int a,b,i,s,num,n=0;char ch,cal[4]={'+','-','*','/'};srand(time(NULL));for(i=0;i<10;i++){a=rand()%10+1;ch=cal[rand()%4];b=rand()%10+1;printf("%d%c%d=",a,ch,b);switch(ch){case '+':s=a+b;break;ca...
C语言简易科学计算器加减乘除括号答:include <stdio.h>#include <stdlib.h>#include <string.h>main(){int i,j,h,g,num[20]={0},z,m,n,s; //num[20]可以这样初始化char ch[80],r,sign[20]; gets(ch); //字符串输入 for(i=0;i<strlen(ch);i++){s=0;switch (ch[i]){case '+':sign[s]='+';...