Conversor de moedas em linguagem c

#include<stdio.h> main(){ char op, opc,inicio; float quant,result,result1; do{ printf("\t\n\xC9\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xBB"); printf("\t\xBA\t\t\t CONVERSOR DE MOEDAS.\t\t\t\t\xBA"); printf("\t\xBA\t\t\t\t\t\t\t\t\t\xBA"); printf("\t\xBA\t\t\tCOTA\x80\xC7O DO DIA 19/09/2012\t\t\t\xBA"); printf("\t\xBA\t\t\t\t\t\t\t\t\t\xBA"); printf("\t\xBA\tD-D\xA2lar E-Euro R-Real C-D\xA2lar Canada A-Rand Africa do Sul \xBA"); printf("\t\xBA\t\t\t\t\t\t\t\t\t\xBA"); printf("\t\xBA P-Peso L-Libra Egito J-Lene Jap\xC6o B-Rublo R\xA3ssia U-Lev Bulg\xA0ria \xBA"); printf("\t\xBA\t\t\t\t\t\t\t\t\t\xBA\n"); printf("\xBA I-Shekel Israel T-Lira Turquia K-Kuna Cro\xA0sia S-D\xA2lar Australi\xA0no \xBA"); printf("\t\xBA\t\t\t\t\t\t\t\t\t\xBA"); printf("\t\xBA G-Teca Bangladesh\t\t\t\t\t\t\t\xBA\n"); printf("\xBA\t\t\t\t\t\t\t\t\t\xBA"); printf("\t\xBA\tQUAL A MOEDA QUE VOC\xD2 POSSUE:\t\t\t\t\t\xBA"); scanf(" %c",&op); switch(op){ case 'D': case 'd': printf("\xBA QUANTIDADE EM DOLAR QUE VOC\xD2 POSSUE PARA SER COMVERTIDO:\t\t\xBA"); scanf("%f",&quant); printf("\xBA PARA QUAL MOEDA VOC\xD2 QUER CONVERTER:\t\t\t\t\t\xBA"); scanf(" %c",&opc); switch(opc){ case 'e':case 'E': result=quant*2.0230;result1=result/2.6415;printf("\xBA VOC\xD2 TERA EM EURO:%.2f\t\t\t\t\t\t\xBA\n",result1);break; case 'r':case 'R': result=quant*2.0230;printf("\xBA