BEGIN{
menu()
}
{
if(ch==1)
factorial()
if(ch==2)
greater()
if(ch==3)
prime()
if(ch==4)
numpal()
if(ch==5)
strpal()
if(ch==6)
exit
}
#functions
function menu()
{
system("clear")
printf("\n\nenter your choice:")
getline ch<"-"
}
function factorial()
{
printf("enter the number:")
getline a<"-"
f=1
if(a==0)
print 1
for(i=1;i<=a;i++)
f=f*i
printf("\nfactorial of %d is :%d",a,f)
getline z"<"
menu()
}
function greater()
{
printf("enter the value of a:")
getline a<"-"
printf("enter the value of b:")
getline b<"-"
printf("enter the value of c:")
getline c<"-"
if(a>b && a>c)
printf("\n%d is greatest",a)
else if(b>a && b>c)
printf("\n%d is greatest",b)
else
printf("\n%d is greatest",c)
getline z<"-"
menu()
}
function prime()
{
printf("enter the number:")
getline a<"-"
i=2
flag=1
while(i<a)
{
if(a%i==0)
{
flag=0
break
}
i++
}
if(flag==1)
printf("\nit is a prime number")
else
printf("\nnot a prime number")
getline z<"-"
menu()
}
function strpal()
{
printf("enter the string:")
getline str<"-"
i=1
flag=0
len=length(str)
while(i<len)
{
ch1=substr(str,i,1)
ch2=substr(str,len,1)
if(ch1!=ch2)
{
flag=1
break
}
i++
len--
}
if(flag==0)
printf("\nstring is palindrome")
else
printf("\nnot a palindrome")
getline z<"-"
menu()
}
function numpal()
{
printf("\nenter a number:")
getline num<"-"
rev=0
org=num
while(num>0)
{
r=int(num%10)
num=int(num/10)
rev=int(rev*10+r)
}
if(rev==org)
printf("\nthe number is a palindrome")
else
printf("\nthe number is not a palindrome")
getline z<"-"
menu()
}
menu()
}
{
if(ch==1)
factorial()
if(ch==2)
greater()
if(ch==3)
prime()
if(ch==4)
numpal()
if(ch==5)
strpal()
if(ch==6)
exit
}
#functions
function menu()
{
system("clear")
printf("\n\nenter your choice:")
getline ch<"-"
}
function factorial()
{
printf("enter the number:")
getline a<"-"
f=1
if(a==0)
print 1
for(i=1;i<=a;i++)
f=f*i
printf("\nfactorial of %d is :%d",a,f)
getline z"<"
menu()
}
function greater()
{
printf("enter the value of a:")
getline a<"-"
printf("enter the value of b:")
getline b<"-"
printf("enter the value of c:")
getline c<"-"
if(a>b && a>c)
printf("\n%d is greatest",a)
else if(b>a && b>c)
printf("\n%d is greatest",b)
else
printf("\n%d is greatest",c)
getline z<"-"
menu()
}
function prime()
{
printf("enter the number:")
getline a<"-"
i=2
flag=1
while(i<a)
{
if(a%i==0)
{
flag=0
break
}
i++
}
if(flag==1)
printf("\nit is a prime number")
else
printf("\nnot a prime number")
getline z<"-"
menu()
}
function strpal()
{
printf("enter the string:")
getline str<"-"
i=1
flag=0
len=length(str)
while(i<len)
{
ch1=substr(str,i,1)
ch2=substr(str,len,1)
if(ch1!=ch2)
{
flag=1
break
}
i++
len--
}
if(flag==0)
printf("\nstring is palindrome")
else
printf("\nnot a palindrome")
getline z<"-"
menu()
}
function numpal()
{
printf("\nenter a number:")
getline num<"-"
rev=0
org=num
while(num>0)
{
r=int(num%10)
num=int(num/10)
rev=int(rev*10+r)
}
if(rev==org)
printf("\nthe number is a palindrome")
else
printf("\nthe number is not a palindrome")
getline z<"-"
menu()
}
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