C language variable parameter error-CodePudding

Error phenomenon:
Calling print (" aaaaa ", "22222", "333333"); Error, screenshot below

Calling print (" BBBBB ", "44444", "5555555", "666666"); The output is normal

 
The book @ 100 ask:/MNT/HGFS/Linux/linux_base $./multiapp 
44444... 5555555... 666666...

The code is as follows:

 

Excuse me, how to solve, 
#include  
#include  
#include  
#include  
Int print (const char * format,... ) 
{
Va_list args. 
Const char * args1; 
Va_start (args, format); 
While (1) 
{
Args1=va_arg (args, const char *); 
If (strlen (args1)) 
Printf (" % s... ", args1); 
The else 
break; 
} 
Va_end (args); 
printf("\n"); 
return 0; 
} 
Int main () 
{
Print (" aaaaa ", "22222", "333333"); 
//print (" BBBBB ", "44444", "5555555", "666666"); 
return 0; 
}

CodePudding user response:

 # include & lt; stdio.h> 
#include  
#include  
#include  

Int print (const char * format,... ) 
{
Va_list args. 
Const char * args1; 
Va_start (args, format); 

//printf (" % s... ", the format); 
While (1) 
{
Args1=va_arg (args, const char *); 
If (args1==NULL) 
break; 
Printf (" % s... ", args1); 
/* 
If (strlen (args1)) 
Printf (" % s... ", args1); 
The else 
break; 
*/
} 
Va_end (args); 
printf("\n"); 
return 0; 
} 
Int main () 
{
Print (" aaaaa ", "22222", "333333", NULL); 
//print (" BBBBB ", "44444", "5555555", "666666"); 
return 0; 
}

For your reference ~

Lack of end logo

CodePudding user response:

Main function:

 int main () 
{
Print (" aaaaa ", "22222", "333333", "");//string length 0 
Print (" BBBBB ", "44444", "5555555", "666666", ""); 
return 0; 
}