Example

The first if statement may appear to check if the arguments are the same, but it will only succeed if they are different. void foo( char *string1, char *string2) { if( strcmp(string1, string2) ) { //the strings are the different } if( !strcmp(string1, string2) ) { //the strings are the same } }

Solution

To avoid this misunderstanding a coding guideline may require that the if-statements be written as below. void foo( char *string1, char *string2) { if(strcmp(string1, string2) != 0) { //the strings are the different } if( strcmp(string1, string2) == 0) { //the strings are the same } }