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Nested Loops C programming allows you to use one loop inside another loop. The following program will clear your concept. Syntax The syntax for a nested for loop statement in C is as follows − for ( init; condition; increment ) {    for ( init; condition; increment ) {       statement(s);    }    statement(s); } The syntax for a nested while loop statement in C programming language is as follows − while(condition) {    while(condition) {       statement(s);    }    statement(s); } The syntax for a nested do...while loop statement in C programming language is as follows − do {    statement(s);    do {       statement(s);    }while( condition ); }while( condition ); Note:- you can put any type of loop inside any other type of loop. For example, a 'for' loop can be inside a 'while' loop or vice versa. Example ...