C. A string has three paragraphs. The first segment is output as is, the second segment is the length of the string to be output, and the third segment is filled with the first segment according to the second segment length.

C. A string has three paragraphs. The first segment is output as is, the second segment is the length of the string to be output, and the third segment is filled with the first segment according to the second segment length.

For example, input ABC 11 12 and output abc12121212.

# Include <stdio. h>
# Include <string. h>
Int main (){
Char A [1, 100], B [2, 100];
Int Len = 0, I, J;
Int flag, T;
Gets ();
For (I = 0; A [I]! = ''; I ++ ){
B [I] = A [I];
}
T = I;
For (j = I + 1; A [J]! = ''; J ++ ){
Len = Len * 10;
Len = Len + A [J]-'0 ';
}
Flag = J + 1;
While (T <Len)
{
If (A [flag]! = '\ 0 ')
{
B [T] = A [flag];
T ++;
Flag ++;

}
Else if (a [flag] = '\ 0 ')
Flag = J + 1;
}
B [Len] = '\ 0 ';
Puts (B );
Return 0;
}