Cancer is the fourth zodiac sign ruled by moon. As per kalpurush kundali, cancer is the fourth zodiac sign and moon represents mother, emotions and mind. Sun is the soul so Sun in cancer makes a person very emotional. He has an emotional personality or attitude.
Sun represents father so person has an emotional attachment towards father or parents. The person may be too deep in emotions that may make others scared too. It also shows that the native father is also emotional and caring. He nurtured his child like a mother. It also shows the individual can follow the footsteps of the father for career purpose. Father may be in business related to restaurant, real estate or nursing.
But always the placement of sun depends on the depositor, so must look at the position of moon.
The nakshatra will also impact the placement of sun. In punarvasu nakshatra, sun will be controlled by the position of jupiter. If sun is in pushya nakshatra, sun will be controlled by the position of saturn. If sun is in ashlesha nakshatra, sun will be impacted by the position of Mercury.