Program:

#include #include #include void keyword(char str[10]) { if(strcmp("for",str)==0||strcmp("while",str)==0||strcmp("do",str)==0||strcmp("int",str )==0||strcmp("float",str)==0||strcmp("char",str)==0||strcmp("double",str)==0||strcmp("static",str)==0||strcmp("switch",str)==0||strcmp("case",str)==0) printf(" %s is a keyword",str); else printf(" %s is an identifier",str); } main() { FILE *f1,*f2,*f3; char c,str[10],st1[10]; int num[100],lineno=0,tokenvalue=0,i=0,j=0,k=0; printf(" Enter the c Program: ");/*gets(st1);*/ f1=fopen("input","w"); while((c=getchar())!=EOF) putc(c,f1); fclose(f1); f1=fopen("input","r"); f2=fopen("identifier","w"); f3=fopen("specialchar","w"); while((c=getc(f1))!=EOF) { if(isdigit(c)) { tokenvalue=c-'0'; c=getc(f1); while(isdigit(c)) { tokenvalue*=10+c-'0'; c=getc(f1); } num[i++]=tokenvalue; ungetc(c,f1); } else if(isalpha(c)) { putc(c,f2); c=getc(f1); while(isdigit(c)||isalpha(c)||c=='_'||c=='$') { putc(c,f2); c=getc(f1); } putc(' ',f2); ungetc(c,f1); } else if(c==' '||c=='\t') printf(" "); else if(c==' ') lineno++; else putc(c,f3); } fclose(f2); fclose(f3); fclose(f1); printf(" The no's in the program are"); for(j=0; j

Breif description/ summary of the program.

1.what are the input requirement?What is the output and what does it mean?

2. sample inputs and outputs.(screen shot)

3.Run the output and Describe what you testing?