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C program to find reverse of a number


#include
int main(){
int num,r,reverse=0;
printf("Enter any number: ");
scanf("%d",&num);
while(num){
r=num%10;
reverse=reverse*10+r;
num=num/10;
}
printf("Reversed of number: %d",reverse);
return 0;
}

C program for Reverse very large or big numbers beyond the range of long int

#include
#define MAX 1000
int main(){
char num[MAX];
int i=0,j,flag=0;
printf("Enter any positive integer: ");
scanf("%s",num);
while(num[i]){
if(num[i] < 48 || num[i] > 57){
printf("Invalid integer number");
return 0;
}
i++;
}
printf("Reverse: ");
for(j=i-1;j>=0;j--)
if(flag==0 && num[j] ==48){
}
else{
printf("%c",num[j]);
flag =1;
}
return 0;

C program to reverse a number using for loop

#include
int main(){
int num,r,reverse=0;
printf("Enter any number: ");
scanf("%d",&num);
for(;num!=0;num=num/10){
r=num%10;
reverse=reverse*10+r;
}
printf("Reversed of number: %d",reverse);
return 0;
}

C program to reverse a number using recursion

#include
int main(){
int num,reverse;
printf("Enter any number: ");
scanf("%d",&num);
reverse=rev(num);
printf("Reverse of number: %d",reverse);
return 0;
}
int rev(int num){
static sum,r;
if(num){
r=num%10;
sum=sum*10+r;
rev(num/10);
}
else
return 0;
return sum;
}










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