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#include <stdio.h>
int main(void)
{
char option;
float b1;
float h1;
float s;
float r;
float b2;
float h2;
float area_rect;
float area_sq;
float area_circ;
float area_tri;
do {
printf("\n\n********************************************\n");
printf(" Choose an Option: \n");
printf(" R. Type to calculate the area of a rectangle \n");
printf(" S. Type to calculate the area of a square \n");
printf(" C. Type to calculate the area of a circle \n");
printf(" T. Type to calculate the area of a triangle \n");
printf(" E. Type to exit the program \n");
printf("********************************************\n");
printf("Introduce option: ");
scanf("%c", &option);
switch (option) {
case 'R':
printf("\nUser has chosen R: calculate the area of a rectangle\n");
printf("Base of the rectangle: ");
scanf("%f", &b1);
printf("Height of the rectangle: ");
scanf("%f", &h1);
area_rect = b1*h1;
printf("The result is: %.2f", area_rect);
break;
case 'S':
printf("\nUser has chosen S: calculate the area of a square\n");
printf("Side of the square: ");
scanf("%f", &s);
area_sq = s*s;
printf("The result is: %.2f", area_sq);
break;
case 'C':
printf("\nUser has chosen C: calculate the area of a circle\n");
printf("Radius of the circle: ");
scanf("%f", &r);
area_circ = 3.14*r*r;
printf("The result is: %.2f", area_circ);
break;
case 'T':
printf("\nUser has chosen T: calculate the area of a triangle\n");
printf("Base of the triangle: ");
scanf("%f", &b2);
printf("Height of the triangle: ");
scanf("%f", &h2);
area_tri = b2*h2/2;
printf("The result is: %.2f", area_tri);
break;
case 'E':
printf("\nUser has chosen to exit\n ");
printf("\nThank you, user. See you soon\n");
break;
default: printf("\n\nError, check the option chosen please\n");
}
} while (option != 'E');
return 0;
}
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