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- #include <stdio.h>
- #include <stdlib.h>
- int main(){
- int op, cont = 0;
- float n1, n2, res;
- do{
- printf("1 - x porcento de y\n");
- printf("2 - quanto x e em percentual de y\n");
- scanf("%d", &op);
- switch(op){
- case 1:
- printf("Digite x e y:\n");
- scanf("%f %f", &n1, &n2);
- res = n2 * n1 / 100;
- printf("%f porcento de %f = %.2f.\n", n1, n2, res);
- break;
- case 2:
- printf("Digite x e y:\n");
- scanf("%f %f", &n1, &n2);
- res = (n1 / n2) * 100;
- printf("%f equivale a %.2f porcento de %f\n", n1, res, n2);
- break;
- default:
- printf("Opcao invalida\n");
- }
- printf("1 - Calcular novamente\n");
- printf("Outro numero - terminar o programa\n");
- scanf("%d", &cont);
- }while(cont == 1);
- return 0;
- }
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