section .data a: dd 3.3 c: dd 5.4 fmti: db "%g %g", 0 fmto: db "%g",10,0 section .text global main extern scanf extern printf extern exit main: push a push dword fmti call scanf add esp, 12 finit fld dword [a] fabs fstp qword [esp] push dword fmto call printf add esp,8 push 0 call exit ret