Q) Separate this into separate header and code files, so that none of the functions are implemented inside the main.c

1 include 2 #include 3 4 #define MAXOP 100 5 #define NUMBER '0' 6 7 int getop(char []); 8 void push (double); 9 double pop(void); 10 11 int main() 12 { 13 int type; 14 double op2; 15 char s[MAXOP]; 16 17 while ((type=getop(s)) != EOF){ 18 switch(type){ case NUMBER: 20 push(atof(s)); 21 break; 22 case '+': 23 push(pop() + pop(); 24 break; 25 26 push(pop() pop()); 27 break; 28 case '-': 29 op2 = pop(); 19 case '*': 30 push(pop) - op2); 31 break; 32 case '/': 33 op2= pop(); 34 if (op2 != 0.0) 35 push(pop()/op2); 36 else 37 printf("error: zero divisor "); 38 break; 39 case ' ': 40 printf("\t%.8g ", pop()); 41 break; 42 default: 43 printf("error: unknown command %s ", s); 44 break; 45 46 } 47 48 // ADD TEST CODE HERE FOR ALL THREE FUNCTIONS 49 50 return 0; 51 } 52 53 #define MAXVAL 100 54 int sp=0; 55 double val[MAXVAL]; 56 57. void push(double f){ 58 if (sp 0) 66 return val[--sp]; 67 else{ 68 printf("error: stack empty "); 69 return 0.0; 70 } 71 } 72 73 #include 74 75 int getch(void); 76 void ungetch(int); 77 78 /* gets the next operator or operand */ 79 int getop(char s[]){ 80 int i, c; 81 82 while( (s[0] = c = getch() ''Il C == '\t') 83 ; 84 S[1]='\0'; 85 if(!isdigit(c) && c != '.') 86 return c; i 87 0; 97 88 if(isdigit(c)) 89 while (isdigi (s[++i] = C = getch())) 90 ; 91 if (c 92 while (isdigit(s[++i] = C = getch())) 93 94 s[i] '0'; 95 if (c != EOF) 96 ungetch(); return NUMBER; 98 } 99 100 #define BUFSIZE 100 101 102 char buf[BUFSIZE]; 103 int bufp =0; 104. /* get the next character, either from standard input or 105 from the buffer (of character's that we placed 'back on the buffer) 106 */ 107. int getch(void){ 108 return (bufp > 0) ? buf[--bufp] : getchar(); 109} 110 111. /*populate the local buffer with characters you meant to 'put back' b/c you 112 read too far*/ 113 void ungetch(int c){ 114 if (bufp >= BUFSIZE) 115 printf("ungetch: too many characters "); 116 else 116 117 118 } else buf[bufp++] = c