[Solved] the answer is always wrong in this MIPS recursion . got 10, supposed to be 55

Question

Functions return their value in $v0; the print integer syscall expects its argument in $a0.
You need to move $a0 to $v0 before you do the print, otherwise you’ll be printing whatever happened to be in $a0 (which in the case is the last value that you recursively added; i.e. 10).

Accepted Answer

Functions return their value in $v0; the print integer syscall expects its argument in $a0.
You need to move $a0 to $v0 before you do the print, otherwise you’ll be printing whatever happened to be in $a0 (which in the case is the last value that you recursively added; i.e. 10).