C - Programming Guide

# include <stdio.h>
# include <conio.h>
# include <string.h>
# include <stdlib.h>
struct deftab
{
char lab[10];
char opc[10];
char oper[10];
}d[10];
void main()
{
char label[10],opcode[10],operand[10],newlabel[10],newoperand[10];
char macroname[10];
int i,lines;
FILE *f1,*f2,*f3;
clrscr();
f1=fopen("macin.txt","r");
f2=fopen("macout.txt","w");
f3=fopen("deftab.txt","w");
fscanf(f1,"%s%s%s",label,opcode,operand);
while(strcmp(opcode,"END")!=0)
{
if(strcmp(opcode,"MACRO")==0)
{
strcpy(macroname,label);
fscanf(f1,"%s%s%s",label,opcode,operand);
lines=0;
while(strcmp(opcode,"MEND")!=0)
{
fprintf(f3,"%s\t%s\t%s\n",label,opcode,operand);
strcpy(d[lines].lab,label);
strcpy(d[lines].opc,opcode);
strcpy(d[lines].oper,operand);
fscanf(f1,"%s%s%s",label,opcode,operand);
lines++;
}
}
else if(strcmp(opcode,macroname)==0)
{
printf("Lines = %d\n",lines);
for(i=0;i<lines;i++)
{
fprintf(f2,"%s\t%s\t%s\n",d[i].lab,d[i].opc,d[i].oper);
printf("DLAB = %s\nDOPC = %s\nDOPER = %s\n",d[i].lab,d[i].opc,d[i].oper);
}
}
else
fprintf(f2,"%s\t%s\t%s\n",label,opcode,operand);
fscanf(f1,"%s%s%s",label,opcode,operand);
}
fprintf(f2,"%s\t%s\t%s\n",label,opcode,operand);
fclose(f1);
fclose(f2);
fclose(f3);
printf("FINISHED");
getch();
}