题解 | #简单计算器#
简单计算器
https://www.nowcoder.com/practice/b8f770674ba7468bb0a0efcc2aa3a239
#include<stdio.h> int main() { double a,c; char b; scanf("%lf%c%lf",&a,&b,&c); if(b!='+'&&b!='-'&&b!='*'&&b!='/') printf("Invalid operation!"); switch(b) { case '+': printf("%.4lf+%.4lf=%.4lf",a,c,a+c); break; case '-': printf("%.4lf-%.4lf=%.4lf",a,c,a-c); break; case '*': printf("%.4lf*%.4lf=%.4lf",a,c,a*c); break; case '/': if(c==0) { printf("Wrong!Division by zero!"); return 0; } printf("%.4lf/%.4lf=%.4lf",a,c,a/c); break; } return 0; }#暴力输出#