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29 lines
695 B
29 lines
695 B
#include<stdio.h>
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#include<stdlib.h>
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int main(){
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float a;
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float b;
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char ch;
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printf("请输入你需要的计算方式\n");
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scanf("%c",&ch);
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printf("请输入第一个数\n");
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scanf("%f",&a);
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printf("请输入第二个数\n");
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scanf("%f",&b);
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switch(ch){
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case '+';
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printf("加法的结果是%f\n",a+b);
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break;
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case '-';
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printf("减法的结果是%f\n",a-b);
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break;
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case '*';
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printf("乘法的结果是%f\n",a*b);
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break;
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case '/';
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printf("除法的结果是%f\n",a/b);
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break;
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case '+';
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printf("加法的结果是%f\n",a+b);
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break;
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