0
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
int reversenum(int original);
int main(int argc, char * argv[]){
int numval;
if(argc != 2){
printf("Please specify a number.\n");
exit(1);
}
numval = atoi(argv[1]);
printf("The reverse of %i is %i\n", numval, reversenum(numval));
return 0;
}
int reversenum(int original){
int returnval = 0;
int val = abs(original);
int sign = sgn(original);
while(val > 0){
returnval *= 10;
returnval += val % 10;
original /= 10;
}
returnval *= sign;
return returnval;
}
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