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- #include<stdio.h>
- #include<stdio.h>
- //prototipos
- int menu(void);
- float soma(float x, float y);
- float subtracao(float x, float y);
- float multiplicacao(float x, float y);
- float divisao(float x, float y);
- int main()
- {
- float x, y;
- printf("Entre com o valor de x: ");
- scanf("%f", &x);
- printf("Entre com o valor de y: ");
- scanf("%f", &y);
- switch(menu())
- {
- case 1:
- printf("%.2f", soma(x, y));
- break;
- case 2:
- printf("%.2f", subtracao(x, y));
- break;
- case 3:
- printf("%.2f", multiplicacao(x, y));
- break;
- case 4:
- printf("%.2f", divisao(x, y));
- break;
- default:
- printf("Opaca errada!");
- break;
- }
- return 0;
- }
- //funçao menu
- int menu()
- {
- int opcao;
- printf("Escolha a Opca:\n");
- printf("1) Soma\n2) Subtracao\n3) Multiplicacao\n4) Divisao\n");
- scanf("%d", &opcao);
- return opcao;
- }
- float soma(float x, float y)
- {
- return (x+y);
- }
- float subtracao(float x, float y)
- {
- return (x-y);
- }
- float multiplicacao(float x, float y)
- {
- return (x*y);
- }
- float divisao(float x, float y)
- {
- if(y==0 || x==0){
- printf("Erro!");
- return 0;}
- else
- return (x/y);
- }
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