1 /*  2  * Main.c  3  * F6-结构-06. 复数四则运算  4  *  Created on: 2014年8月26日  5  *      Author: Boomkeeper  6  ********部分通过***********  7  */  8   9 #include <stdio.h> 10 #include <math.h> 11  12 #define EPSINON 0.1 13  14 /* 15  * 复数结构体,c1、c2对应于题目中的c1、c2 16  */ 17 struct complexNumber { 18     float real; 19     float imaginary; 20 } c1, c2; 21  22 /* 23  * 按照“(a1+b1i) 运算符 (a2+b2i) = 结果”的格式顺序输出2个复数 24  * ch对应于"+" "-" "*" "/"4个运算符 25  */ 26 void printComplex(struct complexNumber c1, char ch, struct complexNumber c2) { 27  28     if (c1.imaginary < 0) { 29         if (c2.imaginary < 0) 30             printf("(%.1f%.1fi) %c (%.1f%.1fi) = ", c1.real, c1.imaginary, ch, 31                     c2.real, c2.imaginary); 32         if (c2.imaginary > 0) 33             printf("(%.1f%.1fi) %c (%.1f+%.1fi) = ", c1.real, c1.imaginary, ch, 34                     c2.real, c2.imaginary); 35     } else if (c1.imaginary > 0) { 36         if (c2.imaginary < 0) 37             printf("(%.1f+%.1fi) %c (%.1f%.1fi) = ", c1.real, c1.imaginary, ch, 38                     c2.real, c2.imaginary); 39         if (c2.imaginary > 0) 40             printf("(%.1f+%.1fi) %c (%.1f+%.1fi) = ", c1.real, c1.imaginary, ch, 41                     c2.real, c2.imaginary); 42     } 43 } 44  45 /* 46  * 输出2个复数的和、差、积、商 47  */ 48 void printResult(float re, float im) { 49  50     if (fabs(re) < EPSINON) 51         re = 0; 52     if (fabs(im) < EPSINON) 53         im = 0; 54  55     if (re == 0 && im == 0) 56         printf("0.0\n"); 57     else { 58         if (re != 0 && im > 0) 59             printf("%.1f+%.1fi\n", re, im); 60         if (re != 0 && im < 0) 61             printf("%.1f%.1fi\n", re, im); 62         if (re != 0 && im == 0) 63             printf("%.1f\n", re); 64         if (re == 0 && im != 0) 65             printf("%.1fi\n", im); 66     } 67 } 68  69 int main(void) { 70  71     float re = 0, im = 0; //临时变量,计算实部和虚部 72  73     scanf("%f %f %f %f", &c1.real, &c1.imaginary, &c2.real, &c2.imaginary); 74  75     //和 76     printComplex(c1, ‘+‘, c2); 77     re = c1.real + c2.real; 78     im = c1.imaginary + c2.imaginary; 79     printResult(re, im); 80  81     //差 82     printComplex(c1, ‘-‘, c2); 83     re = c1.real - c2.real; 84     im = c1.imaginary - c2.imaginary; 85     printResult(re, im); 86  87     //积 88     printComplex(c1, ‘*‘, c2); 89     re = c1.real * c2.real - c1.imaginary * c2.imaginary; 90     im = c1.real * c2.imaginary + c1.imaginary * c2.real; 91     printResult(re, im); 92  93     //商 94     printComplex(c1, ‘/‘, c2); 95     re = (c1.real * c2.real + c1.imaginary * c2.imaginary) 96             / (c2.real * c2.real + c2.imaginary * c2.imaginary); 97     im = (c1.imaginary * c2.real - c1.real * c2.imaginary) 98             / (c2.real * c2.real + c2.imaginary * c2.imaginary); 99     printResult(re, im);100 101     return 0;102 }