It is often the case in programming that you want to do something a fixed number of times. Perhaps you want to calculate gross salaries of ten different persons, or you want to convert temperatures from centigrade to Fahrenheit for 15 different cities.

Let us look at a example which uses a while loop. The flowchart shown below would help us to understand the operation of the while loop.

/* Calculation of simple interest for 3 sets of p, n and r */
main( )
{
int p, n, count ;
float r, si ;

count = 1 ;

while ( count <= 3 )
{
printf ( “\nEnter values of p, n and r ” ) ;

scanf ( “%d %d %f”, &p, &n, &r ) ;
si = p * n * r / 100 ;

For loop is probably the most popular looping instruction. The for allows us to specify three things about a loop in a single line: Setting a loop counter to an initial value. Testing the loop counter to determine whether its value has reached the number of repetitions desired. Increasing the value of…

Here a C program to calculate simple interest using for loop. main ( ) { int p, n, count ; float r, si ; for ( count = 1 ; count <= 3 ; count = count + 1 ) { printf ( "Enter values of p, n, and r…

In the First C Program discussed earlier (same has been also mentioned below for the reference) we assumed the values of p, n and r to be 1000, 3 and 8.5. Every time we run the program we would get the same value for simple interest. If we want to calculate…

Problem Statement: If the marks obtained by a student in five different subjects are input through the keyboard, find out the aggregate marks and percentage marks obtained by the student. Assume that the maximum marks that can be obtained by a student in each subject is 100. Answer: /* Calculation…

Tags: printf, calculation, learn, example, calculate, programming

Problem Statement: Write a program to calculate the salary as per the following table: Solution: /* C program to calculate salary */ main( ) { char g ; int yos, qual, sal ; printf ( "Enter Gender, Years of Service and Qualifications ( 0 = G, 1 = PG ):" )…