{{keywords>wiki library source code example reference}} ===== if ===== #include /* including standard library */ //#include /* uncomment this for Windows */ if ( condition == true ){ command; } ===== C Sourcecode Example ===== #include /* including standard library */ //#include /* uncomment this for Windows */ int main( void ) { int i; for (i=0;i<=99;i++){ if (i==42) { printf("I have found the answer: %i\n",i); } } return 0; } output: user@host:~$ ./if I have found a answer: 42