Fixed error in ex2_c
Fixed error in ex2_c

giorgiobornia/femus,FeMTTU/femus,saikanth88/femus,saikanth88/femus,saikanth88/femus,giorgiobornia/femus,giorgiobornia/femus,FeMTTU/femus,FeMTTU/femus,FeMTTU/femus,saikanth88/femus,giorgiobornia/femus