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PGM 8.txt
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PGM 8.txt
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#include<stdio.h>
#include<string.h>
void main()
{
FILE *f1,*f2,*f3,*f4;
int lc,sa,l,op1,o,len;
char m1[20],la[20],op[20],otp[20];
f1=fopen("Input.txt","r");
f3=fopen("Symtab.txt","w");
fscanf(f1,"%s %s %d",la,m1,&op1);
if(strcmp(m1,"START")==0)
{
sa=op1;
lc=sa;
printf("\t%s\t%s\t%d\n",la,m1,op1);
}
else
lc=0;
fscanf(f1,"%s %s",la,m1);
while(!feof(f1))
{
fscanf(f1,"%s",op);
printf("\n%d\t%s\t%s\t%s\n",lc,la,m1,op);
if(strcmp(la,"-")!=0)
{
fprintf(f3,"\n%d\t%s\n",lc,la);
}
f2=fopen("Optab.txt","r");
fscanf(f2,"%s %d",otp,&o);
while(!feof(f2))
{
if(strcmp(m1,otp)==0)
{
lc=lc+3;
break;
}
fscanf(f2,"%s %d",otp,&o);
}
fclose(f2);
if(strcmp(m1,"WORD")==0)
{
lc=lc+3;
}
else if(strcmp(m1,"RESW")==0)
{
op1=atoi(op);
lc=lc+(3*op1);
}
else if(strcmp(m1,"BYTE")==0)
{
if(op[0]=='X')
lc=lc+1;
else
{
len=strlen(op)-2;
lc=lc+len;}
}
else if(strcmp(m1,"RESB")==0)
{
op1=atoi(op);
lc=lc+op1;
}
fscanf(f1,"%s%s",la,m1);
}
if(strcmp(m1,"END")==0)
{
printf("Program length =%d",lc-sa);
printf("\n");
}
fclose(f1);
fclose(f3);
}