text: #include <stdio.h>
  
  int main(void) {
     printf("\nWelcome!\n");
     char op[80];
     float balance = 0.0F;
     float data = balance;
     int num = 2;
     while(num == 2) {
  	   printf("\n: ");
  	   num = scanf("%s %f", op, &data);
  	   if(num == 2) {
  		   printf("%.02f %s %.02f \t= ", balance, op, data);
  		   if(op[0] == '+') {
  				balance = balance + data;
  		   }
  		   if(op[0] == '-') {
  				balance = balance - data;
  		   }
  		   printf("%.02f\n", balance);
  		}
     }
     printf("=====\nTOTAL: %.02f\n", balance);
     return 0;
  }