CodePudding user response:

 # include & lt; Iostream> 
#include  
using namespace std; 
Int main () 
{
Cout<& lt;" . "& lt; Cout & lt; <"Hello!" Cout & lt; & lt;" Welcome to c + +!" Cout<& lt;" . "& lt; getchar(); 
Cout<& lt;" Which task order you like to do?" Cout<& lt;" 11 "& lt; int x; 
Cin> x; 
The switch (x) {
Case 1: {
Float a=0.00000678 f; 
Double b=0.00000678; 
A=a + 111111.111 f; 
B=b + 111111.111; 
CoutCout<& lt;" A="& lt; Cout<& lt;" H \ ti \ \ b BJK \ n123 \ '\' \ \ \ 102 cde x41 \ "& lt; break; 
} 
} 

return 0; 
} 

//... 
//Hello! 
//Welcome to c + +! 
//... 
//3 
//Which task order you like to do? 
//11 
//2 
//f ge 
//h jk 
//123 '\ "ABCDE 
//please press any key to continue... 


//... 
//Hello! 
//Welcome to c + +! 
//... 
//1 
//Which task order you like to do? 
//11 
//1 
//a=111111.1093750000000000, 111111.1110067800037000 
 b=//please press any key to continue... 

CodePudding user response:

 int main () 
{
Cout<& lt;" . "& lt; Cout & lt; <"Hello!" Cout & lt; & lt;" Welcome to c + +!" Cout<& lt;" . "& lt; getchar(); 
Cout<& lt;" Which task order you like to do?" Cout<& lt;" 11 "& lt; int x; 
Cin> x; 
The switch (x) {
Case 1: {
Float a=0.00000678 f; 
Double b=0.00000678; 
A=a + 111111.111 f; 
B=b + 111111.111; 
CoutCout<& lt;" A="& lt; Cout<& lt;" H \ ti \ \ b BJK \ n123 \ '\' \ \ \ 102 cde x41 \ "& lt; break; 
} 
} 
} 

CodePudding user response: