Question one hundred and twelve: Legal identifier of C language (2)

[Plain] Description
 
Enter a string to check whether it is a valid identifier of C.
 
Input
 
The input data contains multiple test instances. The first line of the data is an integer n, indicating the number of test instances, followed by n rows of input data, each line is a string of no more than 50 characters.
 
Output
 
Output a row of input data for each group. If the input data is a valid identifier of C, "yes" is output; otherwise, "no" is output ".
 
 
Sample Input
 
 
3
12ajf
Fi8x_a
Ff ai_2
 
Sample Output
 
 
No
Yes
No

Description

Enter a string to check whether it is a valid identifier of C.

Input

The input data contains multiple test instances. The first line of the data is an integer n, indicating the number of test instances, followed by n rows of input data, each line is a string of no more than 50 characters.

Output

Output a row of input data for each group. If the input data is a valid identifier of C, "yes" is output; otherwise, "no" is output ".

Sample Input

3
12ajf
Fi8x_a
Ff ai_2

Sample Output

No
Yes
No
 

[Plain] # include <stdio. h>
# Include <string. h>
 
Int main ()
{
Int I;
Int flag;
Int num;
Int length;
Char string [101];
 
Scanf ("% d", & num );
Getchar ();
 
While (num --)
{
Gets (string );
Length = strlen (string );
Flag = 1;
 
If (string [0] = '_' | (string [0]> = 'A' & string [0] <= 'Z ') | (string [0]> = 'A' & string [0] <= 'Z '))
{
For (I = 0; I <length; I ++)
{
If (string [I] = '_' | (string [I]> = 'A' & string [I] <= 'Z ') | (string [I]> = 'A' & string [I] <= 'Z ') | (string [I]> = '0' & string [I] <= '9 '))
{
Flag = 1;
}
Else
{
Flag = 0;
}
 
If (flag = 0)
{
Break;
}
}
}
Else
{
Flag = 0;
}

 
If (flag)
{
Printf ("yes ");
}
{
Printf ("no ");
}
 
If (num> 0)
{
Printf ("\ n ");
}
}
 
Return 0;
}

# Include <stdio. h>
# Include <string. h>

Int main ()
{
Int I;
Int flag;
Int num;
Int length;
Char string [101];

Scanf ("% d", & num );
Getchar ();

While (num --)
{
Gets (string );
Length = strlen (string );
Flag = 1;

If (string [0] = '_' | (string [0]> = 'A' & string [0] <= 'Z ') | (string [0]> = 'A' & string [0] <= 'Z '))
{
For (I = 0; I <length; I ++)
{
If (string [I] = '_' | (string [I]> = 'A' & string [I] <= 'Z ') | (string [I]> = 'A' & string [I] <= 'Z ') | (string [I]> = '0' & string [I] <= '9 '))
{
Flag = 1;
}
Else
{
Flag = 0;
}

If (flag = 0)
{
Break;
}
}
}
Else
{
Flag = 0;
}

If (flag)
{
Printf ("yes ");
}
{
Printf ("no ");
}

If (num> 0)
{
Printf ("\ n ");
}
}

Return 0;
}