A C program is a collection of one or more
functions. Every function is a collection of statements and performs some
specific task. The general Structure of C program -
Comments can be placed anywhere in a program and
are enclosed between the delimiters /* …. */ , Single line comments // …. , #if
0 …… #endif. (….. are statements).
example :
/* this is Example program in generic here writing about Program theme */
#include // this is preprocessor directive
int main() {
printf("Welcome to Onsettechie");
#if 0
printf("this is comments part");
#endif
return 0;
}
Preprocessor directives are processed through
preprocessor before the C source code passes through Compiler. the Commonly
used preprocessor directives are #include including header files, #define is
used to define symbolic constants and macros.
Every C program has one or more functions.
Execution of every C program starts with main() function. The statement return
0 at the end of main() means that the function is terminated Successfully.
Other functions are
user Defined functions, which also have local variables and C statements. They
can define Before or after main() function.