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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<stdio.h> #include<conio.h> void calsi(float,float,int); void calcsi(float principal,float rate,int time) { float si; si=(principal*rate*time)/100; printf("simple interest is %f",si); } void main() { float p; float r; int t; clrscr(); printf("enter principal amount "); scanf("%f",&p); printf("enter rate of interest"); scanf("%f",&r); printf("enter time in years"); scanf("%d",&t); calcsi(p,r,t); getch(); }