What are the C Programs asked in interviews? | Top programs in C, Mostly ask in interview, most helping for improve logic.
Important program of C Language that are asking in Interview
//Palindrome Number Program in C
#include<stdio.h>
int main()
{
int n, r, sum=0, temp;
printf("Enter the number=");
scanf("%d", &n);
temp=n;
while(n>0)
{
r = n%10;
sum = (sum*10)+r;
n = n/10;
}
n=temp;
if(n==sum)
{
printf("Palindrome Number");
}
else
{
printf("Not a Palindrome Number");
}
}
Output:
Enter the number=4554
Palindrome Number
//Prime Number Program in C
#include<stdio.h>
int main()
{
int n, i, count=0;
printf("Enter the number=");
scanf("%d", &n);
for(i=1; i<=n; i++)
{
if(n%i==0)
{
count++;
}
}
if(count==2)
{
printf("Prime Number");
}
else
{
printf("Not a Prime Number");
}
}
Output:
Enter the number=7
Prime Number
//Fabonacci Series Program in C
#include<stdio.h>
int main()
{
int n, a=0, b=1, c, i;
printf("Enter the number=");
scanf("%d", &n);
for(i=1; i<=n; i++)
{
printf("%d\n", a);
c=a+b;
a=b;
b=c;
}
}
Output:
Enter the number=10
0
1
1
2
3
5
8
13
21
34
//Armstrong Number Program in C
#include<stdio.h>
int main()
{
int n, r, c, sum=0, temp;
printf("Enter the number=");
scanf("%d", &n);
temp=n;
while(n>0)
{
r=n%10;
c=r*r*r;
sum=sum+c;
n=n/10;
}
n=temp;
if(n==sum)
{
printf("Armstrong Number");
}
else
{
printf("Not a Armstrong Number");
}
}
Output:
Enter the number=153
Armstrong Number
//Reverse Number Program in C
#include<stdio.h>
int main()
{
int i, reverse=0, remainder;
printf("Enter numbers");
scanf("%d", &i);
while(i>0)
{
remainder = i%10;
reverse = (reverse*10) + remainder;
i = i/10;
}
printf("Reverse number =%d", reverse);
}
Output:
Enter numbers
123456789
Reverse number =987654321
//Factorial program in C language
#include<stdio.h>
int main()
{
int n, i, fact=1;
printf("Enter the number = ");
scanf("%d", &n);
for(i=1; i<=n; i++)
{
fact = fact*i;
}
printf("The factorial of %d is %d", n, fact);
return 0;
}
Output:
Enter the number = 5
The factorial of 5 is 120
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