by @MUHAMMAD ABDURREHMAN AMIR KHAN Fork
{"functions":[],"name":"question 2","main":{"rawId":"main","tpe":"Void","name":"main","statements":[{"@type":"Begin","id":"id_4803b96a_a1ce_4221_b64f_44a77613ce7f"},{"lengthValue":-1,"@type":"Declare","lengthValue1":"5","tpe":"Real","name":"r","lengthValue2":"5","id":"id_dff249ba_95e5_489b_af04_ab50be748998","initValue":null},{"lengthValue":-1,"@type":"Declare","lengthValue1":"5","tpe":"Real","name":"area","lengthValue2":"5","id":"id_6123da36_a814_456d_a27b_0bba236e0c60","initValue":null},{"lengthValue":-1,"@type":"Declare","lengthValue1":"5","tpe":"Real","name":"pi","lengthValue2":"5","id":"id_a756615f_16d0_4a61_9964_5a88ee4439ce","initValue":"3.1416"},{"@type":"Input","name":"r","id":"id_ca4a88d0_744b_4b51_bf2c_50663d1c2339","prompt":null},{"falseBlock":{"statements":[{"newline":true,"@type":"Output","id":"id_9757764c_bb80_4a28_aae8_3145d84cd825","value":"\"input invali\""}],"id":"id_b0f0d2ac_f734_41d9_a583_c3b4b6ada197"},"trueBlock":{"statements":[{"@type":"Assign","name":"area","id":"id_2523106a_cffb_4763_9df1_810228b4c7e2","value":"pi*pow(r,2)"},{"newline":true,"@type":"Output","id":"id_adc160ce_44a9_4db1_9d38_7fcedcf39509","value":"the area of circle is \"+area=pi*r^2\""}],"id":"id_c02d5b49_23d8_4eda_925f_761a563fceb0"},"condition":"r>0","@type":"If","id":"id_7fe0a002_b910_410e_a7fb_40eebed3cc99"},{"@type":"Return","id":"id_5758c8ef_0957_43fe_893a_b1108e9b5887","maybeValue":null}],"parameters":[]},"id":"id_d9b13bd3_ecf7_444d_abb2_995e5b7750f2","config":{"showDebugVars":true,"useInputPrompt":false,"echoEnteredValue":false,"showIoBtns":true,"showFunctions":false,"lang":"java","showGenCode":true},"version":"0.3","revision":216}