D 语言 - 关系运算符

下表列出了D语言支持的所有关系运算符。 假设变量 A 为 10，变量 B 为 20，则 −

示例

尝试以下示例来了解 D 编程语言中可用的所有关系运算符 −

import std.stdio;
  
int main(string[] args) { 
   int a = 21; 
   int b = 10; 
   int c ;  
   
   if( a == b ) { 
      writefln("Line 1 - a is equal to b\n" ); 
   } else { 
      writefln("Line 1 - a is not equal to b\n" );
   } 
   
   if ( a < b ) { 
      writefln("Line 2 - a is less than b\n" ); 
   } else { 
      writefln("Line 2 - a is not less than b\n" ); 
   } 
   
   if ( a > b ) { 
      writefln("Line 3 - a is greater than b\n" ); 
   } else { 
      writefln("Line 3 - a is not greater than b\n" ); 
   } 
   
   /* Lets change value of a and b */ 
   a = 5; 
   b = 20; 
   
   if ( a <= b ) { 
      writefln("Line 4 - a is either less than or equal to b\n" ); 
   } 
   if ( b >= a ) { 
      writefln("Line 5 - b is either greater than or equal to b\n" ); 
   } 
   return 0; 
}

当你编译并执行上面的程序时，它会产生以下结果 −

Line 1 - a is not equal to b 
 
Line 2 - a is not less than b
  
Line 3 - a is greater than b
  
Line 4 - a is either less than or equal to b
  
Line 5 - b is either greater than or equal to b

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