explain about nested structure with example explain about array of structure with an example explain about field with an example explain in detail array of structure and point to structure write a program to demonstrate the use of unions in structure

20) Explain about Nested structures with exanple 3Q) Explain atout crrays of structares withan example 4) Erplain about bield with an example 5Q Explain in detail array of structrure and pointa to steructure 69 extrain about the differen wans QQ write a progran to demonstate the use of union in structide