关于给char型变量赋值的问题
#include <stdio.h> int main(void) { double a, b, c; char flag; int m, n, q, z; do { printf("---------------------\n"); printf("easy calculator\n"); printf("---------------------\n"); do { printf("addition input '+', subtraction input '-', multiplication input '*', division input '/'\n"); printf("please input you want:") scanf("%c", &flag); printf("you input is %c. yes press 1. no press 0 please choose"); scanf("%d", &z); } while (0 == z); if (flag == '+') m=1; else if (flag == '-') m=2; else if (flag == '*') m=3; else if (flag == '/') m=4; do { printf("do a %c b\n",flag); printf("please input a:"); scanf("%lf",&a); printf("please input b:"); scanf("%lf",&b); printf("you want do %lf %c %lf ?? yes input 1, no input 0\n", a, flag, b); scanf("%d",&q); } while (0 == q); switch (m) { case 1: c=a+b; break; case 2: c=a-b; break; case 3: c=a*b; break; case 4: c=a/b; break; } printf("%lf %c %lf=%lf", a, flag, b, c); printf("return? yes input 1, no input 0"); scanf("%d", &n); }while (1 == n); return 0; } 手机发帖……格式好乱……红色字体在编译成程序的时候显示错误…求解……
