1.e-3*coss(1.e2); unknown identifier in line 1 //coss -unknown identifier
ln(-1); answer= -Infinity // Logarithm of a negative number
1.e1+2*3.e-2+4.*cos(-2.)+ (1.e-3*exp(-2.))**2* sqrt(2)+1.e-3*(2+6.**2); answer= 8.43341 // no errors
1.e1+2*3.e-2+4.*cos(-2.)+ (1.e-3*exp(-2.))**2* sqrt(2)+1.e-3*(2+6.**2)); syntax error additional bracket )
sqrt(-1.); answer= NaN // sqrt of negative number
1.e+2*cos(exp(1.e0)* 2.ee-1; syntax error in a float number in line 2