convert.c

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#include<stdio.h>

void main()
{
	char cmnd;
	float inp;
	do {
		printf("\nPlease select functions:\n");
		printf("1:  Convert Celsius to Fahrenheit\n");
		printf("2:  Convert Fahrenheit to Celsius\n");
		printf("3:  Quit\n");
		scanf("%c",&cmnd);
		switch (cmnd)
		{
		case '1':
			{
				printf("Please input Celsius temperature to convert (no less than -273.16) :\n");
				scanf("%f",&inp);
				printf("This temperature In Fahrenheit is : %f\n",inp*1.8+32);
				break;
			}
		case '2':
			{
				printf("Please input F temperature to convert (no less than -459.69) :\n");
				scanf("%f",&inp);
				printf("This temperature In Centigrade is : %f\n",5*(inp-32)/9);
				break;
			}
		case '3':
			{
				break;
			}
		default:
			{
				printf("Unsupported Command,Please input again.\n");
			}
		}	
		getchar();
	}
	while (cmnd!='3');
	return 0;
}