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warning: pointer targets in passing argument 1 of 'strlen' differ in signedness


This warning will appear , if you pass a unsigned char array value as parameter into strlen() function.
Actually strlen() function is asking for signed char array value.
Not only strlen() function all other string functions will accept only signed values.
Example: strcpy(),strcmp(),strcat() etc…


Actually i found this warning when i was doing a LED SIGNBOARD of 10 feet to my college. To program with AVR microcontrollers, i used AVR Studio IDE.

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