C program in stack to concatenate two strings using push and pop functions
#include<stdio.h> #include<conio.h> #include<string.h> #define max 30 void push(char ch); char pop(); char stack[max]; int top=-1; void main() { char a[20],b[20],k[40],ch; int i,l1,l2; clrscr(); printf("\n Enter First String:-\n"); scanf("%s",a); printf("\n Enter Second String:-\n"); scanf("%s",b); l1=strlen(a); l2=strlen(b); for(i=0;i<l2;i++) { push(b[i]); //push second string into stack } push(' '); for(i=0;i<l1;i++) { push(a[i]); //push first string into stack } printf("\n After concatenation of two string:-\n"); i=0; while(top!=-1) { ch=pop(); if(ch==' ') { k[i]='\0'; printf("%s",strrev(k)); i=0; } else { k[i]=ch; i++; } } k[i]='\0'; printf("%s",strrev(k)); getch(); } void push(char ch) { ...