#include<stdio.h> int main() {     int a,b,sum;     scanf("%d %d",&a,&b);     sum = a+b;     printf("%d+%d=%d\n",a,b,sum);     printf("     %d\n",a);     printf("+   %d\n",b);     printf("-------\n");     printf("    %d\n",sum...

#include<stdio.h> int main() {     int n,s,num,x;     scanf("%d",&n);     s = n%10;     if(s>5)     {         x = 10 -s;         num = n+x;         printf("%d",num);     }     else     {         num = n - s;         printf("%d",num);     } }

#include<stdio.h> #include<math.h> int main() {     int a;     scanf("%d",&a);     float c;     int b;     c = sqrt(a);     b = floor(c);     printf("%d",b);;     }

#include<stdio.h>  int main(){      int n;            scanf("%d",&n);      if(!n){          printf("%d",n);      }else{          while(n){              printf("%d",n%10);              n /= 10;          }      }       putchar('\n');      return 0;...

a=input() b=str(a)[-1] print(b)