C provides following types of loops:

1. for loop.
2. while loop.
3. do-while loop.
4. nested loop.

For Loop :

Syntax:

 for( initialization; condition; increment/decrement) {
               // Statement1
              //Statement2
           }

where, initialization of variable, condition is till where you want to execute the statements increment/ decrement of counter.

while Loop:

Syntax:

 while(condition) {
                //Statement1
               // Statement2
           }
where, condition is that till where when you want to execute your statements.

do-while Loop:

Syntax:

do{
               //Statement1
              //Statement2
             }while(condition);

 where, condition is till where you want to execute the statements.

Nested Loop:

Syntax:

 for( initialization; condition1; increment/decrement) {
                // Statements
                   for( initialization; condition2; increment/decrement) {
                           //Statement1
                           //Statement2
                  }
              }