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  1. #include<stdio.h>
  2. struct complex
  3. {
  4.     double real;    //実数部
  5.     double imaginary;   //虚数部
  6. };
  7.  
  8. struct complex complex_add(struct complex func_a, struct complex func_b){
  9.     struct complex func_c;
  10.     func_c.real = func_a.real + func_b.real;
  11.     func_c.imaginary = func_a.imaginary + func_b.imaginary;
  12.     return func_c;
  13. }
  14.  
  15. struct complex complex_sub(struct complex func_a, struct complex func_b){
  16.     struct complex func_c;
  17.     func_c.real = func_a.real - func_b.real;
  18.     func_c.imaginary = func_a.imaginary - func_b.imaginary;
  19.     return func_c;
  20. }
  21.  
  22. struct complex complex_mul(struct complex func_a, struct complex func_b){
  23.     struct complex func_c;
  24.     func_c.real = func_a.real * func_b.real - func_a.imaginary * func_b.imaginary;
  25.     func_c.imaginary = func_a.imaginary * func_b.real + func_a.real * func_b.imaginary;
  26.     return func_c;
  27. }
  28.  
  29.  
  30. struct complex complex_div(struct complex func_a, struct complex func_b){
  31.     struct complex func_c;
  32.     func_c.real = (func_a.real * func_b.real + func_a.imaginary * func_b.imaginary) / (func_b.real * func_b.real + func_b.imaginary * func_b.imaginary);
  33.     func_c.imaginary = (func_a.imaginary * func_b.real - func_a.real * func_b.imaginary) / (func_b.real * func_b.real + func_b.imaginary * func_b.imaginary);
  34.     return func_c;
  35. }
  36.  
  37. void print_complex(char message[],struct complex a){
  38.     printf("%s = %3lf + %3lfi\n",message,a.real,a.imaginary);
  39. }
  40.  
  41. int main(){
  42.  
  43.     struct complex a,b,c;
  44.  
  45.     a.real = 10;
  46.     a.imaginary = 5;
  47.     b.real = 20;
  48.     b.imaginary = 3;
  49.  
  50.     print_complex("a",a);
  51.     print_complex("b",b);
  52.  
  53.     c = complex_add(a,b);
  54.     print_complex("a + b",c);
  55.     c = complex_sub(a,b);
  56.     print_complex("a - b",c);
  57.     c = complex_mul(a,b);
  58.     print_complex("a * b",c);
  59.     if(b.real != 0 || b.imaginary != 0){
  60.         c = complex_div(a,b);
  61.         print_complex("a / b",c);
  62.     }else{
  63.         printf("0除算エラー");
  64.     }
  65.  
  66.     return(0);
  67. }
Success #stdin #stdout 0.01s 1720KB
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stdin
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Standard input is empty
stdout
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a = 10.000000 + 5.000000i
b = 20.000000 + 3.000000i
a + b = 30.000000 + 8.000000i
a - b = -10.000000 + 2.000000i
a * b = 185.000000 + 130.000000i
a / b = 0.525672 + 0.171149i
https://ideone.com/KEkARd
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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