i ended up redoing everything and here it is
Code:
#include <stdio.h>
#include <conio.h>
#include <string.h>
char input[20];
int l, x, y, z, a, b, c, val1, val2, fl1, fl2, dec, decloc, invfp, inttemp, idetemp, identifier, integer, op, chlit, stlit, floatlit, string;
main()
{
identifier=0;
idetemp=0;
integer=0;
inttemp=0;
invfp=0;
floatlit=0;
fl1=0;
fl2=0;
val1=0;
val2=0;
dec=0;
l=strlen(input);
op=0;
chlit=0;
stlit=0;
string=0;
clrscr();
printf("Input: ");
gets(input);
/* For Operators */
if (strlen(input)==1)
{
if ((input[0]=='+' || input[0]=='-' || input[0]=='*' || input[0]=='/'))
op=1;
}
/* End */
/*For Character and String Literals */
if ((input[0]=='"' && input[l]=='"'))
{
if (input[2]=='"')
chlit=1;
else
stlit=1;
}
/* End */
/* For Floating Literals */
for (x=0; x<=strlen(input); x++)
{
if (input[x]=='.')
{
dec=dec+1;
decloc=x;
}
}
if (dec==1)
{
for (y=0; y<decloc; y++)
{
if ((input[y]=='0' || input[y]=='1' || input[y]=='2' || input[y]=='3' || input[y]=='4' || input[y]=='5' || input[y]=='6' || input[y]=='7' || input[y]=='8' || input[y]=='9' || input[y]=='.'))
val1=val1+1;
}
for (z=decloc+1; z<=strlen(input); z++)
{
if ((input[z]=='0' || input[z]=='1' || input[z]=='2' || input[z]=='3' || input[z]=='4' || input[z]=='5' || input[z]=='6' || input[z]=='7' || input[z]=='8' || input[z]=='9'))
val2=val2+1;
}
}
else if (dec>=2)
invfp=1;
if (val1==decloc)
{
fl1=1;
}
if (val2==(strlen(input)-decloc)-1)
{
fl2=1;
}
/* End */
/* For Integer */
for (a=0; a<=strlen(input); a++)
{
if ((input[a]=='0' || input[a]=='1' || input[a]=='2' || input[a]=='3' || input[a]=='4' || input[a]=='5' || input[a]=='6' || input[a]=='7' || input[a]=='8' || input[a]=='9'))
{
inttemp=inttemp+1;
}
}
/* End */
/* For Identifiers */
for (c=0; c<=strlen(input); c++)
{
if ((input[c]=='_' || input[c]>=65 && input[c]<=122))
idetemp=idetemp+1;
}
if ((idetemp==strlen(input) && strlen(input)!=0))
{
identifier=1;
}
/* End */
if (op==1)
printf("Operator");
else if (chlit==1)
printf("Character Literal");
else if (stlit==1)
printf("String Literal");
else if (identifier==1)
printf("Identifier");
if ((fl1==1 && fl2==1 && dec!=0))
{
floatlit=1;
}
if (floatlit==1)
printf("Floating Literal");
if ((inttemp==strlen(input) && strlen(input)!=0))
{
integer=1;
printf("Integer Literal");
}
else if ((op==0 && chlit==0 && stlit==0 && floatlit==0 && integer==0 && identifier==0))
{
if (invfp==0 && input[0]!=0)
printf("INVALID");
else if ((invfp==0 && input[0]==0))
printf("Please Enter a Value!");
else if (invfp==1)
printf("Invalid Floating Point Literal");
}
getch();
}
for the integer part, what i really wanted to do was to use For Loop and increment the varable being compared with the content of the array index. sadly, i got lost in using nested for loop that's why i decided to code it from 0 to 9. would you guys please tell me how i should have done it?
@laserlight im a newbie and i dont know how to use that function, but thanks, i'll try to use it after learning how.
thanks guys=)
Originally Posted by tabstop
