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Resources » Articles/Knowledge Sharing » Education »
System software lab cs1207 - Symbol Table
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#include
#include
#include
#include
void main()
{
char in[50],dig[50],temp[50];
int i=0,j=0,k=0,l=0;
clrscr();
printf("Enter the input expression:");
gets(in);
printf("\n Keyword \tIdentifier \tConstant \tOperator \tSplChar\t");
while (in[i]!='\0')
{
if(isalpha(in[i]))
{
j=0;
while((isalpha(in[i]))||(isdigit(in[i])))
{
temp[j]=in[i];
i++;
j++;
}
temp[j]='\0';
if(strcmp(temp,"char")==0||strcmp(temp,"int")==0||strcmp(temp,"float")==0||strcmp(temp,"if")==0||strcmp(temp,"else")==0||strcmp(temp,"do")==0||strcmp(temp,"while")==0||strcmp(temp,"for")==0||strcmp(temp,"switch")==0||strcmp(temp,"case")==0)
{
printf("\n ");
for(l=0;l printf("%c",temp[l]);
}
else
{
printf("\n\t\t");
for(l=0;l printf("%c",temp[l]);
}
}
else if(isdigit(in[i]))
{
k=0;
while(isdigit(in[i]))
{
dig[k]=in[i];
i++;
k++;
}
printf("\n\n\t\t\t\t");
for(l=0;l printf("%c",dig[l]);
}
else if(in[i]=='+'||in[i]=='-'||in[i]=='<'||in[i]=='>'||in[i]=='/'||in[i]=='%'||in[i]=='*'||in[i]=='=')
{
printf("\n\n\t\t\t\t\t\t %c",in[i]);
i++;
}
else if(in[i]==';'||in[i]==','||in[i]==':'||in[i]=='.'||in[i]=='('||in[i]==')'||in[i]=='{'||in[i]=='}')
{
printf("\n\n\t\t\t\t\t\t\t\t %c",in[i]);
i++;
}
else
{
i++;
printf("\n");
}
getch();
}
}
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