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//program to create a function to calculate simple interest based on principal amount,rate of interest and time (principal,rate and time are passed to functions as arguments, principal and rate are passed as float arguments , time is passed as integer argument ) #include<iostream.h> #include<conio.h> void calsi(float,float,int); void calcsi(float principal,float rate,int time) { float si; si=(principal*rate*time)/100; cout<<"simple interest is "<<si; } void main() { float p; float r; int t; clrscr(); cout<<"enter principal amount "; cin>>p; cout<<"enter rate of interest"; cin>>r; cout<<"enter time in years"; cin>>t; calcsi(p,r,t); getch(); }