include <stdio.h>int main() {int opna,opnb,i,res;char op;while(scanf("%d%c%d",&opna,&op,&opnb) == 3) {switch(op) {case '+' : printf("%d + %d = %d\n",opna,opnb,opna + opnb); break;case '-' : printf("%d - %d = %d\n",opna,opnb,opna - opnb...