C++ looping concept is similar to C
looping concept. Looping is required when you want to execute some set of
statements repeatedly, until a particular condition is satisfied.
HOW DOES A LOOP WORK ?
When c++ compiler comes into loop,
first it checks condition, if condition is satisfied, it executes sets of
statements in loop body. After executing set of statements in loop body,
compiler again checks condition, and if again condition is satisfied, compiler
again executes set of statements in loop body. Compiler repeatedly executes set
of statements in loop body, until condition is unsatisfied.
TYPES OF LOOPS IN C++ LANGUAGE
- for loop
- while loop
- do-while loop
for loop
for loop is a loop that executes set of statement repeatedly until particular condition is satisfied. for loop is most popular loop.
SYNTAX OF FOR LOOP
for(<initialization>;<condition>;<increment/decrement>)
{
//for loop body
}
EXAMPLE OF FOR LOOP
for(i=0;i<5;i++)
{
cout<<"C++ programming"<<endl;
}
OUTPUT:
C++ programming
C++ programming
C++ programming
C++ programming
C++ programming
while loop
while is a keyword in c++ language.
SYNTAX OF WHILE LOOP
variable initialization;
while(condition)
{
//while loop statements
variable increment/decrement;
}
EXAMPLE OF WHILE LOOP
int i=0;
while(i<5)
{
cout<<"C++ programming"<<endl;
i++;
}
OUTPUT:
C++ programming
C++ programming
C++ programming
C++ programming
C++ programming
do while loop
do and while are keywords in c++ language. In do-while loop, at first time do-while statements are always executing because condition will check after statements.
SYNTAX OF DO WHILE LOOP
variable initialization;
do
{
//do while loop statements
variable increment/decrement;
}
while(condition);
EXAMPLE OF DO WHILE LOOP
int i=0;
do
{
cout<<"C++ programming"<<endl;
i++;
}
while(i<5)
OUTPUT:
C++ programming
C++ programming
C++ programming
C++ programming
C++ programming
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