infix to postfix expression converter in "C" language
program: #include<stdio.h> void infix_to_postfix(char[],char[]); int precedence(char); void main() { char infix[20],postfix[20]; printf("enter infix string : "); scanf("%s",infix); infix_to_postfix(infix,postfix); printf("\npostfix exp= %s",postfix); } void infix_to_postfix(char infix[],char postfix[]) { char s[20],symbol; int top=-1,i=0,j=0; while(infix[i]!='\0') { symbol=infix[i]; switch(symbol) { case '(':++top; s[top]=symbol; break; case ')':while(s[top]!='(') { postfix[j++]=s[top]; top--; } top--; break; case '+': case '-': case '*': case '^': case '/': while(precedence(symbol)<=precedence(s[top]) && top!=-1) postfix[j++]=s[top--];