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Title infix _to_ postfix_conversion
Author hiren j patel
Author Email vyomworld [at] vyomworld.com
Description
Category C » Data Structures
Hits 370867
Code Select and Copy the Code
#include<stdio.h> #include<conio.h> #include<string.h> #include<ctype.h> #define N 100 void push(char *stk,int *sp,char item); char pop(char *stk,int *sp); void main() { static char stack[N],target[N]; char *t,*s,n1,n2,item,str[N]; int p1,p2,i,top=-1; clrscr(); printf(" Enter the infix notation :"); gets(str); s=str; t=target; while(*s) { if(*s==' ' || *s==' ') { s++; continue; } if(isdigit(*s) || isalpha(*s)) { while(isdigit(*s) || isalpha(*s)) { *t=*s; t++; s++; } } if(*s=='(') { push(stack,&top,*s); s++; } if(*s==')') { n1=pop(stack,&top); while(n1!='(') { // n1=pop(stack,&top); *t=n1; t++; n1=pop(stack,&top); } s++; } if(*s=='+'||*s=='*'||*s=='/'||*s=='%'||*s=='-') { if(top==-1) { push(stack,&top,*s); } else { n1=pop(stack,&top); while(priority(n1)>=priority(*s)) { *t=n1; t++; n1=pop(stack,&top); } push(stack,&top,n1); push(stack,&top,*s); } s++; } } while(top!= -1) { n1=pop(stack,&top); *t=n1; t++; } t='

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