Calculator in C programming

Hi

I am searching Calculator codes in C programming. If know Calculator coding in C programming plz provide me. I tried to make code but giving me error.


Thanks

I am having this Calculator code

Code:

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#include<stdio.h>

float add(float,float);
float sub(float,float);
float product(float,float);
float divide(float,float);

void main()
{
    float n1,n2;
    char sym,choice;
    printf("This Program is a program for calculator\n\n");
    scanf("%f%c%f",&n1,&sym,&n2);
    if(sym=='+')
        printf("\n%f",add(n1,n2));
    if(sym=='-')
        printf("\n%f",sub(n1,n2));
    if(sym=='*')
        printf("\n%f",product(n1,n2));
    if(sym=='/')
        printf("%f",divide(n1,n2));
    printf("\nDo you wish to continue[y/n]");
    scanf("%s",&choice);
    if(choice=='y'||choice=='Y')
        main();
}

float add(float m1,float m2)
{
    return(m1+m2);
}

float sub(float m1,float m2)
{
    return(m1-m2);
}

float product(float m1,float m2)
{
    return(m1*m2);
}

float divide(float m1,float m2)
{
    return(m1/m2);
}

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Code:

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#include <stdio.h><br>
#include <conio.h><br>
main()<br>
{<br>
  float n1,n2,s,d,p,q;<br>
  clrscr();<br>
  printf("\n Enter two nos");<br>
  scanf("%f%f"&n1,&n2);<br>
  s=n1+n2;<br>
  d=n1-n2;<br>
  p=n1*n2;<br>
  q=n1/n2;<br>
  printf("\n Sum %f",s);<br>
  printf("\n Difference %f",d);<br>
  printf("\n Product %f",p);<br>
  printf("\n Quotient %f",q);<br>
  getch();<br>
 return(0);<br>
}

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