Reverse a string using recursion in c

.fieldsetOut{
background:#1E90FF;
padding:0px 0px 0px 0px;
font-family: "courier new"
}
.fieldsetIn{
background:white;
margin:1px 1px 1px 1px;
padding:1px 1px 1px 1px;
border: 0px 0px 0px 0px

}
.explanation{
color:#800000;
font-size:25px;
font-weight:900;
letter-spacing:15
}







C code to reverse a string by recursion:



#include

#define MAX 100

char*

C Program find Positive Negative with Switch Case Without Conditional Operator

write a program in c to check whether the given num is Positive or negative using switch case without conditional operator

 ‎#include<stdio.h>
#include<conio.h>
void main(void)
{
char num;
clrscr();
printf("Enter a number +ve or -ve : ");
scanf("%c",&num);
switch(num)
{
case '-':
printf("Negative number");
break;
default:
printf("Positive number");
}
getch();
}

Example of Using Strings in C

Example of Using Strings in C

# include<stdio.h>
# include<conio.h>
# include<string.h>

void main()
{
char *a;
printf("Enter your name=");
gets(a);
printf("%s",a);
getch();

ATM programing

ATM C programing language Program code

 ‎/*Note Pin code is 1234*/
#include<stdio.h>
#include<conio.h>

void main(void)
{ unsigned long amount=1000,deposit,withdr​aw;
int choice,pin=0,k=0;
char another='y';

while(pin!=1234)
{ clrscr();
gotoxy(30,25);
printf("Enter pin:");
scanf("%d",&pin);
}
clrscr();
do
{

printf("********Welcome to ATM Service**************\n");
printf("1. Check Balance\n");
printf("2. Withdraw Cash\n");
printf("3. Deposit Cash\n");
printf("4. Quit\n");
printf("******************​**************************​*\n\n");
printf("Enter your choice: ");
scanf("%d",&choice);
switch(choice)
{
case 1:
printf("\nYour Balance is Rs : %lu ",amount);
break;
case 2:
printf("\nEnter the amount to withdraw: ");
scanf("%lu",&withdraw);
if(withdraw%100!=0)
{
printf("\nPlease enter

amount in multiples of 100");
}else if(withdraw>(amount-500))
{

printf("\nInsufficient Funds");
}else
{

amount=amount-withdraw;

printf("\n\nPlease collect cash");

printf("\nYour balance is %lu",amount);
}
break;
case 3:
printf("\nEnter amount to deposit");
scanf("%lu",&deposit);
amount=amount+deposit;
printf("Your balance is %lu",amount);
break;
case 4:
printf("\nThank you for using ATM");
break;
default:
printf("\nInvalid Choice");
}
printf("\n\n\nDo you want another transaction?(y/n): ");
fflush(stdin);
scanf("%c",&another);
if(another=='n'||another==​'N')
k=1;
}while(!k);
printf("\n\nHave a nice day");
getch();

}

Greatest of two numbers using relational conditional operators

program to find greatest of 2 numbers without using relational and conditional operators

‎#include<stdio.h>
#include<conio.h>
#include<math.h>
void main(void)
{
int a,b;
clrscr();
printf("Enter a number: ");
scanf("%d",&a);
printf("Enter another number: ");
scanf("%d",&b);
printf("The greatest number is %d",(a+b+abs(a-b))/2);
getch();
}

how 2 find a given number is positive or negative number in C without using relational and conditional operator

‎# include<stdio.h>
# include<conio.h>
# include<math.h>
void main()
{
clrscr();
int p,n;
printf("Enter two no=");
scanf("%d",&p);
switch(n=abs(p)+(-p))
{
case 0:
{
printf("Positive number");
break;
}
default:
{
printf("Negative number");
break;
}
}
getch();
}

find a given number is positive or negative number in C without if statement, relational and conditional operator

# include <math.h>
# include <stdio.h>
# include <conio.h>
void main()
{
clrscr();
int p,n;
printf("Enter two no=");
scanf("%d",&amp;p);
switch(n=abs(p) +(-p))
{
case 0:
{
printf("Positiv e number");
break;
}
default:
{
printf("Negativ e number");
break;
}
}
getch();
}