check is number is palindrome in C
#include <stdio.h> #include <conio.h> void main() { int n,i,r=0; printf("Enter a number: "); scanf("%d",&n); for(i=n;i!=0;i) { r=r*10; r=r+ i%10; i=i/10; } if(r==n) printf("palindrome"); else printf("Not palindrome"); }
palindrome string program in c
#include <stdio.h> #include <string.h> int main() { char str[80]; int length; printf("\nEnter a string to check if it's a palindrome: "); scanf("%s", str); // string input length = strlen(str); // finding the string length int i, j, count; for (i = 0, j = length - 1, count = 0; i < length; i++, j--) { // matching string first character with the string last character if (str[i] == str[j]) { count++; // if character match, increasing count by one. } } if (count == length) // if count == length, then the string is a palindrome. { printf("'%s' is a palindrome.\n", str); } else // otherwise the string is not a palindrome. { printf("'%s' is not a palindrome.\n", str); } return 0; }
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