APC-PRAC-013.c (917B)
1 /* Write a program to input sum(p), rate of interest(r), time(t) and type of interest 2 ('s' for simple interes, 'c' for compound interest), then calculate and display the earned interest */ 3 4 #include <stdio.h> 5 #include <math.h> 6 #include <ctype.h> 7 8 int main() 9 { 10 double p, t, r, si, ci; 11 char mode; 12 printf("Enter the Principle, Time (Year) and the Rate of Interest : "); 13 scanf("%lf %lf %lf", &p, &t, &r); 14 printf("Enter the mode of calculation ('s' for simple interest, 'c' for compound interest) : "); 15 scanf(" %c", &mode); 16 mode = tolower(mode); 17 switch (mode) 18 { 19 case 's': 20 si = (p * t * r) / 100; 21 printf("\nSimple Interest : %g", si); 22 return 0; 23 case 'c': 24 ci = (p * pow(1 + (r / 100), t)) - p; 25 printf("\nCompound Interest : %g", ci); 26 return 0; 27 default: 28 printf("\nYou entered a wrong choice."); 29 return 1; 30 } 31 }